Confused about the 24 transit

I will be traveling to Hanoi but will go to two different airports in China. My schedule is as follows: arrive at WUH- 6:20 then leave WUH at 7:45 arrive CAN 9:45. Leave CAN at 22:15. I have read that I need a visa because I pass through multiple cities but the picture shows that I do not. Thanks in advance for your help.