Yes, the weather is bad in south China this year, cold and unexpected snow has visited these cities. However, it is impossible to estimate the weather one month later. You'd better pay attention to the weather forecast.

Even if snow happened here, the high-speed trais among these cities are in operation all the same. So, you may change to traveling by train, which is more comfortable and convenient by bus. The China train schedule(https://www.travelchinaguide.com/china-trains/) could be searched already.

Thank you...

but i will be traveling by bus because i had paid for the package tour which is operating by bus ....

Regards
Jessie