You can only take a bus from Zhaoqing to Guangzhou, and then change at Guangzhou.
The best way is to take a bus to Guangyuan Bus Terminal and take a taxi at Guangyuan Bus Terminal to the military hospital.
Secondly, transfer to the bus at Guangyuan Bus Terminal, walk about 125m from Guangyuan Bus Terminal to Guangyuan Bus Terminal (bus station), and take bus No.38 (6 stops) and get off at Guangzhou Military Region General Hospital Station.
This should be the shortest route.
Zhaoqing has a bus to Guangyuan Bus Terminal.