An aerial view of Yueyaquan (月牙泉) of Crescent Lake in Dunhuang, Gansu Province (甘肃省 敦煌). It is a crescent-shaped lake in an oasis famous as a tourist spot. The water level of the lake is declining. Thanks Jessica_Hsu.
Three different 150 Fen stamps were used. They are merchant group (2012-27, 3-3; face value is printed as 1.50 Yuan) and two different covered bridge stamps (1997-8, 4-3 and 4-4). However, they are not cancelled.