Part 4 · Lesson 2 of 8 · 6 min read
Wave-nature theory (permission from the higher timeframe, backing from the lower timeframe)
From Master Cường Boss's teaching sessionsLesson 20 of 84 in the courseUpdated 2026-08-22
In this lesson
Core idea
Two lines the teacher makes everyone copy word for word:
- The higher timeframe decides the market's trend; the lower timeframe is the catalyst that pushes the market along that trend.
- For a timeframe to run its wave, it must have PERMISSION from the higher timeframe and BACKING from the lower timeframe.
Missing "permission" → the wave gets cancelled out by the higher timeframe's force. Missing "backing" → the wave has no energy to run, it wanders around and fizzles out.
Details
1. What "permission" is
= the adjacent higher timeframe is in phase with the direction you want to trade (or at least is in a range, i.e. not objecting). If the higher timeframe is out of phase, its correction force/selling force will block the lower timeframe's wave.
An example the teacher points to on the chart: 3D still has intact upward momentum and wants to go up to complete that momentum — but 1W has already switched into a bearish state. Result: 3D's upward momentum fails right at the top, unable to break the old high. Thanks to multi-timeframe logic you know it will fail while it's still up in the top zone, rather than waiting for RSI to drop below 40 (by which point you've already lost a whole leg).
2. What "backing / catalyst" is
= the smaller timeframes have genuinely strong upward/downward momentum (RSI pushing up into the 80+ zone for an up wave — an extremely strong buying-force zone). The catalyst is exactly the upward/downward-momentum theory applied to the child timeframes.
A comparative example the teacher gives:
- A stretch where H1 completes its upward momentum very strongly — because at that time H4 was agreeing on the up move.
- The stretch right after, H1 still had upward momentum but completed it weakly — because H4 had already stepped into a correction process (H1 was out of phase with its higher timeframe).
- When 1W makes the call to go up while 1D–2D–3D all build upward momentum at once → an extremely strong catalyst, and the weekly-timeframe wave runs very powerfully.
3. The 3-tier check chain
To trade the wave of timeframe X, check in this order:
- Does the timeframe above X give permission? (in phase / range = ok; out of phase = no)
- Does X itself have a clear pattern? (the two RSI moving averages trending, with some width to the spread)
- Do the timeframes below X back it up? (upward/downward momentum, the high-low structure still holding)
All 3 tiers nest recursively: for H4 to run you need 1D's permission + H1/15m's backing; for H1 to run you need H4's permission + 15m/5m's backing.
4. Applying this to managing and closing positions
- Keep holding when the lower timeframes still have momentum that hasn't completed → there's still energy to keep pulling.
- Close when: the lower timeframes have finished all their momentum (or completed it weakly), start forming the opposite structure, retest resistance and can't rise — while your own timeframe is also rolling back over.
- A weak lower-timeframe signal while the higher timeframe is still widening in the same direction ⇒ that's a signal to CLOSE, not a signal to reverse the position.
5. Whatever timeframe a wave belongs to, look for that timeframe's support
A very practical consequence: if there's no lower-timeframe support holding it up along the way, price will run straight back to the original support of the exact timeframe that gave birth to that wave. This is why you get moves that "go up and then dive straight back to the exact starting point," which outsiders call manipulation — it's actually still consistent with the theory.
How to determine which timeframe a high/low belongs to: a high/low only has value when it corresponds to a trending RSI leg of that exact timeframe. Minor high/lows created by a smaller timeframe have no value as resistance/support for a larger timeframe. (Discipline consequence: you may not set a stop by a 15m high/low to catch an H4 wave — see Timeframe consistency (the profit-generating strategy).)
6. "The adjacent timeframe" must be truly adjacent, not too close
- 1D agrees with 3D, not with 2D — because 2D ≈ 2 daily candles, almost the same timeframe, giving no extra data. Likewise H1 and 90m are almost one and the same timeframe.
- H1 is only strong enough to pull H4. H1 or 15m cannot pull 1D. A 1D-timeframe wave that only manages to build momentum as far as 15m = a weak wave, very prone to degrading into a sideways channel.
- Big waves nest small waves: when 1D is rising it contains H4 waves inside it; H4 contains H1. For the next leg of any given timeframe to be assured, the top of that exact timeframe's wave must have its own upward momentum.
7. Correcting a misunderstanding about the "lower timeframe backing" condition
A student summarized the process as: check the higher timeframe's fuel tank → wait for the adjacent lower timeframe to already have upward momentum → agree. The teacher corrects the middle clause:
- Don't wait for the lower timeframe to have already finished building its upward momentum — by then price has already run far, and the stop has to be set very wide.
- It's enough that the lower timeframe has already reset / has finished its downward momentum to meet the entry condition. This exact gap is what creates a good R:R.
- Comes with a rule for reading RSI crossing below 40: breaking price support → that timeframe's momentum is broken; holding support → it's only that buying force has weakened, selling force hasn't come in yet, it can still keep rising.
8. The higher timeframe rolls down while the lower timeframe ranges = NO backing
1D rolls down but H1/H4 are ranging → don't short following 1D with a stop worth thousands of pips. That's the state of "permission but no backing." You have to wait for the lower timeframe to produce a pattern before entering — exactly the spirit of you need A, you need B, before you get C (Wave validity — the equation a + b = c).
Putting it into practice
- Before every trade, write out 3 lines: does the higher timeframe give permission? does my own timeframe have a pattern? does the lower timeframe give backing?
- Missing tier 1 → skip the trade. Missing tier 3 → lower your expectations, reduce size, close early.
- Use tier 3 as a health gauge for the position throughout the time you hold it: lower-timeframe momentum still there → hold; gone/weak + your own timeframe rolling back → close.
- Use tier 1 to forecast an early fail instead of waiting for a late confirming signal.
What the teacher stresses / common traps
- This is a theory the teacher says he'll use throughout the entire trading process, not side knowledge.
- Trap: only looking at the pretty pattern on your own timeframe, ignoring that the higher timeframe is objecting → walking straight into a failed trade.
- Trap: the higher timeframe gives permission but the lower timeframe has no force, and you enter anyway because "the higher timeframe looks pretty" → the wave doesn't run, position stuck.
- Trap: mistaking a weak lower-timeframe signal for a reversal signal → entering the opposite position while the higher timeframe is still widening.
Related lessons
- Multi-timeframe (multi-timeframe logic) — the in-phase/out-of-phase foundation this theory stands on
- Wave-progression theory — uses this exact theory to manage positions when trading by progression
- Rising momentum / falling momentum (QTT – QTG) — the "catalyst" is exactly the upward/downward momentum on the lower timeframe
- Wave logic — whatever timeframe a wave belongs to, it looks for that timeframe's support
- Timeframe consistency (the profit-generating strategy) — the rule for managing a position by the exact timeframe you entered on
- Entry point — the 3-tier check chain before you click the trade
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