Why is it sunny in Chongqing with low pressure recently?

First of all, Chongqing is now in a subtropical high. Cold and warm air will form a front when they meet, and there will be obvious weather processes, such as rainfall and cooling. This year's subtropical high is around Chongqing at 32 west longitude. The cold air from the north can't meet the subtropical high in Chongqing, resulting in high temperature and little rain. This phenomenon is rare, and it won't rain for the next week. This is what I saw when I watched CCTV again.