Simacai is a border district of Laocai province, about 100 km from Laocai City to the northeast. It is situated on the Chay River. Simacai is an abbreviated name of the word “Sín Mã Cái”, meaning new horse market. Located at 1600 meters above sea level, the air is cool and fresh as in Sapa. But this place is so wild, charming and idyllic.