plants growing from the walls of xichang ancient city in liangshan, sichuan

wall green rock soil brick tree ruins wood art geology leaf terrain stonewall brickwork iron plant flooring plants growing from walls xichang ancient city liangshan sichuan province china sichuan liangshan xichang city gate space moon ancient chinese wall trees shadows tourism travel unmanned famous scenic spots outdoor architecture tourism destination architectural structure building exterior history spot plants growth vitality ferns ferns