TIA has reached the top of the daily line. If you want to do ultra-short short with stop loss, you can start trial and error. In addition to the current price being the TIA resistance level, 8.1 is the second resistance level of the three-day line level. Do you believe it will rise to 8.1? Try and error when you reach the resistance, and ambush the next resistance with stop loss. Ultra-short contracts are that simple