It is under the administration of the Garzê Tibetan Autonomous Prefecture.

Xinlong County is part of historical region of Nyarong.

Jazi (Nyarong Jazi Gon; Jazi Gon Sangngak Dechen Choling; gya bzi dgon, gya dgon, ja bzi dgon gsang sngags bde chen chos gling; Chinese: 甲孜寺; pinyin: Jiǎzī Sì) is a Nyingma monastery in Xilong County that was founded in 1866.

[3][4] Jazi Amnye Drodul Pema Garwang Lingpa (1901–1975) studied here as a young boy, before going to Tromge Monastery.

[5] Xinlong County is divided into 6 towns and 10 townships.