What are the regional cultural differences in China?

In ancient times, there was a plague of locusts in northern China, so the place where the plague of locusts often occurred was dedicated to General Liu Meng, and there was the Temple of General Liu Meng. It is said that General Liu Meng specializes in exterminating locusts. There is no temple without locusts. We can check local chronicles by studying the locusts in ancient China. Where there is the temple of General Liu Meng, it means that this is an area where the plague is prevalent.

In ancient times, many people worshipped the river god, so as long as there is a troubled river, there is a river temple. Some river gods are famous for their surnames. For example, there is Erlang Temple in a flood-stricken area in Sichuan. It is said that Li Bing's son Jiro manages water well, so the people want Jiro to protect them. Fujian people worship Mazu. It is said that Mazu was the daughter of a company commander named Ling in the Song Dynasty. She appeared a few days after drowning at sea and later became the goddess Mazu. Because Fujian is either fishing or sailing, Mazu is widely worshipped along the coast, and it is very popular for Fujian people to bring Mazu to Taiwan Province Province. When Fujian people brought Mazu to Shanghai, Shanghai people didn't know what Mazu was, so they changed Mazu Tempel into Tianfei Palace, Tianjin into Tianhou Palace, and Vietnam called Lingmu or Tianmu. ?