Short-term supplementary buying method (taking the most recent small wave segment as an example):

Take profit at 204.25 for part of the position, add to the position on a pullback to 198.65-197.25. If it breaks below 196.45, reduce the supplementary position.

Take profit at 207.25 for part of the position, add to the position on a pullback to 204.25-203.85. If it breaks below 202, reduce the supplementary position. (Take profit at 207.25 has already occurred, can hold through 209-210, and upon breaking through here, it will rush towards 214-217).

Take profit at 214.25 for the remaining 50% of the position, add to the position on a pullback to 207.85-206.25. If it breaks below 204, reduce the supplementary position (around 214 is the highest point of this small wave segment).

PS: Do not add to the position until the supplementary point is reached. When the market is very strong, some small take profit points (weak resistance) will not linger and will rush past; if watching the market, you can manually chase and add to the position in real-time. The supplementary part must be at the take profit point to ensure the sell order is successfully executed.