Was wonderin, if march is still cold in Beiging and Xian, what is the average temperature then,

We would like to go on a 22 day china tour, visiting Chongqing, Jingzhou, Wuhan, Suzhou, Shanghai, Guilin, Yangzhuo, Guangzhou, zhuhai, Macau Hong Kong and a Yangze river cruise, is there a good chance we would get good weather on these cities s[ecially on the river cruise, thank you for your help