BEIJING, July 3 (Xinhua) -- The act of Indian border troops recently crossing into Chinese territory was described as "very serious" by a Chinese Foreign Ministry spokesperson Monday.
"The current situation is totally different from previous confrontations between the two countries' border troops, which happened at an undefined China-India boundary," spokesperson Geng Shuang said.
The latest crossing occurred at the Sikkim section of the China-India boundary that had long-been demarcated, Geng said, noting this section had been defined in the Convention Between Great Britain and China Relating to Sikkim and Tibet in 1890.
According to the convention, the border line commences at Mount Gipmochi in the east and follows the water-parting until it meets Nepal, Geng told a routine press briefing.
Geng said successive Indian governments had acknowledged the demarcation in writing and agreed to the border between Sikkim and Tibet.
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