Why don't teachers in some places in Yibin, Sichuan interview?

Undeveloped areas. In some places in Yibin, Sichuan, teachers don't have to interview, because the local area is underdeveloped, so in order to better retain teachers to teach here, they don't interview. Yibin, a prefecture-level city under the jurisdiction of Sichuan Province, is known as "the first city of the Yangtze River, the wine capital of China and the bamboo capital of China", and is located at the junction of Yunnan, Guizhou and Sichuan provinces and the intersection of Jinsha River, Minjiang River and Yangtze River.