Is Gansu province a border area, and please tell me how to memorize the shape of the map of the area, I will give rich prize points!

Gansu is a frontier province, and its northernmost part borders Mongolia.

As for the shape of Gansu province, you know the Hexi Corridor! Because it is in the middle of the two mountains, history is to connect the affluent Central Plains and the desert of the Great Western Region excellent channel, in addition to the southwest of the high Tibetan Plateau ancient people do not have modern tools, can not be transported; and the north is the vast Gobi, arid and less water. Just this place has both the meltwater of the mountain glaciers, but also towards the domain of the same direction towards the not too high mountains, and there is no big mountain barrier, so in ancient times is important to the Silk Road main road. So remember the map of the province that has a major transportation route in the middle of the house on both sides is wide must be Gansu Province.

Remember the shape of the map combined with historical knowledge and the direction of the river (the water source to take, is the space necessary for human survival in ancient times) will be easier, for example, Shaanxi is a vertical plateau on the west bank of the Yellow River plateau plus the south east-west (the majority of domestic rivers are east-west) Weihe River Valley, is the main activities of the ancient Qin people in the territory, referred to as the Qin, so the top is narrow and the bottom is wide.