which zone of nepal touch the border of india and china
China–Nepal border The line extends between two tripoints China–Nepal–India. The tripoint in the west is in the Nepalese district of Mahakali Zone. The tripoint in the east is in the region of Mechi.
Nathu La Nathu La (Devanagari नाथू ला; Tibetan: རྣ་ཐོས་ལ་, IAST: Nāthū Lā, Chinese: 乃堆拉山口; pinyin: Nǎiduīlā Shānkǒu) is a mountain pass in the Himalayas. It connects the Indian state of Sikkim with China's Tibet Autonomous Region. The pass, at 4,310 m (14,140 ft) above mean sea level,[1] forms a part of an offshoot of the ancient Silk Road. Nathu means "listening ears" and La means "pass" in Tibetan.[2] On the Indian side, the pass is 54 km (34 mi) east of Gangtok, the capital of Sikkim. Only citizens of India can visit the pass, and then only after obtaining a permit in Gangtok.