Is there a bullet train from Huadu District of Guangzhou to Longyan, Fuzhou?

You can go directly to Shenzhen Pingshan Station through the existing freight link between guangzhou-shenzhen railway and xiamen-shenzhen railway in Pinghu, Shenzhen, and open bullet trains from Guangzhou, Dongguan East and Shenzhen Pingshan Station to Xiamen, Fuzhou, Hangzhou and Shanghai, avoiding Guangzhou South Railway Station and Guangzhou-Shenzhen High-speed Railway 350. Why do I have to change trains at Guangzhou South Railway Station? That's a different route. You can find the same route. Do you have to change trains like this? Why? Why? Why?