Why is Guangzhou Line 4 so swaying?

there are many corners. According to the inquiry of official website of Guangzhou Line 4, it is known that Guangzhou Line 4 is so swaying because its construction mode is eight-shaped and there are many corners. This will cause the train to slow down quickly when turning, which will cause the train to shake. Guangzhou Line 4 is a subway line in Guangzhou, Guangdong Province, China, and its first section was opened on December 26th, 25.