Chinese dynasties from the
Qin (221 BC to 207 BC) to the
Qing period (1644 CE to 1911 CE) placed high priority on maintaining stability and security in the region, motivated by concerns about potential threats from the Northwest. Security concerns have continued under modern governments. During the
Republic of China period, the government was only able to exercise loose control in the Northwest. In 1933,
Pan-Islamic and
Pan-Turkic separatists declared an
Islamic Republic of East Turkestan based on constitutionally-enshrined
Sharia law. The short-lived separatist Islamic Republic was not recognized by any other countries and was suppressed after three months of existence. With Soviet Union backing, separatists declared a second short-lived
East Turkestan Republic in 1944 based in
Yining. The Soviet Union withdrew its support in June 1946. A
separatist movement drawing on the legacy of the short-lived East Turkestan Republics continues today. == During land reform movement ==