The eighth floor of Xidan Huawei, next to the triangle cat.
Take a bus from Huairou to Dongzhimen.
Then transfer to Metro Line 2 to Jianguomen Station.
Just transfer to 1 line to Xidan station.
Huawei building
East: Treasury KTV West: Joy City
South: Pearl North: Xidan Shopping Mall
Maybe it's not accurate, that's all.