Go long on the 16th, holding onto the 4000-point profit without taking profit, ultimately breaking even and stopping loss; on the 18th, go long again, with a 3500-point profit in hand but still not exiting, still breaking even and stopping loss; on the 19th, the third time going long, continue to set break-even exit. It all depends on how many more times you want to tinker before it finally rises happily!