Hong Kong Commercial Daily inform Liuhua Road Station of Metro Line 11 surrounding environment complex and geological conditions are poor. Main undercut tunnel section in medium and lightly weathered muddy sandstone layer, with various structural sections and rock strength. Therefore first time one  Guangzhou Metro station construction by hole pile method.

Hole pile method: One shallow burying method. During construction, a pilot tunnel is first excavated, and then side piles, center pillars, crown beams, and top longitudinal beams constructed in pilot tunnel. Follow excavation and construction of buckle arches, and finally supporting system by piles, beams, and arches, soil is excavated layer by layer and built into internal structure.

https://www.hkcd.com/hkcdweb/content/2021/12/30/content_1315408.html