Soldiers from Erenhot frontier inspection station guard at the No 815 boundary marker on Jan 25. The Erenhot frontier inspection station is the largest port of entry along the China-Mongolia border. Soldiers will continue guarding the northern gate of China to ensure a peaceful Spring Festival. [Photo/people.cn]

Soldiers wish people a Happy Chinese New Year from Erenhot frontier inspection station on Jan 25. The Erenhot frontier inspection station is the largest port of entry along the China-Mongolia border. Soldiers will continue guarding the northern gate of China to ensure a peaceful Spring Festival. [Photo/people.cn]

Soldiers patrol the boundary line near Erenhot frontier inspection station on Jan 25. The Erenhot frontier inspection station is the largest port of entry along the China-Mongolia border. Soldiers will continue guarding the northern gate of China to ensure a peaceful Spring Festival. [Photo/people.cn]