the three annual periods of hot weather, namely 初伏[chu1 fu2], 中伏[zhong1 fu2] and 末伏[mo4 fu2], which run consecutively over a period from mid-July to late August
to lean over / to fall (go down) / to hide (in ambush) / to conceal oneself / to lie low / hottest days of summer / to submit / to concede defeat / to overcome / to subdue / volt