Xiaomanyao is in the south of the Pearl River (old Guangzhou is called the south of the Pearl River and Henan is called the south of the river).
Within 500 meters near Xiaomanyao, the more affordable ones should be near Xingang Middle Road, including Jin Yuan Seafood Restaurant and Longqiang Restaurant (suitable for mass consumption).
Closer still, there is a food city in the Baijia supermarket opposite the main entrance of the Pearl River Dijing, whose name I have forgotten.
In Guangzhou, as long as you are on the right time for tea drinking: 9-12 a.m. and before 2-6 p.m., there is tea in Cantonese restaurants.