Tianshuihai

Tianshuihai (Chinese: 甜水海; pinyin: Tiánshuǐ Hǎi; lit. 'sweet water sea'), alternatively spelled Tien Shui Hai, is a salt water lake in the disputed Aksai Chin region administered by China as part of the Xinjiang Autonomous Region (Hotan County, Hotan Prefecture), which is also claimed by India. The lake's basin is a small plain, formerly known as the Thaldat basin or Mapothang. The lake drains the Thaldat stream that flows from the southwest. It is located east of the Lokzhung Range and northwest of the Aksai Chin Lake.

The Xinjiang–Tibet Highway of the 1950s was laid close to the lake, and an army service station was built on its banks, called the Tianshuihai service station. Around 2000, an improved national highway (G219) was laid on a new alignment further to the east, and the Tianshuihai service station was moved to a new location, closer to the new alignment.