These are typically dark, hard, rugged, water worn carbonate sedimentary stones that resemble mountains or, in some case, figures. They originate in mountain streams near Youlan village in Luzhai County between Guilin and Liuzhou in Guangxi province. These are sought after by collectors of landscape and figure stones. Youlan village in Luzhai County between Guilin and Liuzhou in Guangxi province. These are sought after by collectors of landscape and figure stones.