Is the ticket to Spring Festival travel rush expensive?

Before the Spring Festival, the passenger flow was mainly concentrated in returning people from big cities such as Beishangguang. At this time, air tickets from big cities to small cities (such as Beijing, Shanghai, Guangzhou and other places) are very expensive, and there is basically no discount or less discount (8-9 fold). But at this time, on the contrary, the air tickets from small cities to big cities such as Beishangguang are very cheap, basically 3-5 fold, and even lower.