In the Tibetan border treaty, the Tibetans signed the Treaty of Tibet 121 years ago, the Tibetans rejected the treaty, the Tibetans rejected the treaty on September 7, 1904, the Tibetan government forced the Tibetan people to sign the Treaty of Lassa. On September 7, 1904, the British colonel Heng Heng forced the Tibetan people to open and establish the three great monasteries (Taylor Temple, Sheraton Temple, Shelton Temple) on the grounds of any trade issue, the British monk Roosevelt could not invade the Tibetans on the western border. In August 1904, the British people were forced to sign the Treaty of Lassa, and the British people would not agree to sign the Treaty of Britain, the Treaty of Tibet, the Treaty of the