ZHAOTONG, Yunnan - Premier Wen Jiabao on Saturday called for rapid, all-out efforts to search for survivors and save lives following multiple quakes that claimed at least 80 lives in southwestern province of Yunnan.

Saying that the first 72 hours are critical for post-quake rescue operations, Wen said rescuers must make their utmost efforts to find and rescue survivors.

Wen reached mountainous Yiliang county, one of the worst-hit areas, around 1 a.m. Saturday. He has spent a sleepless night visiting quake survivors in local villages and hospitals since arriving.

Directing rescue work in a temporary tent in the quake zone, Wen said the top priority now is to save people. He asked rescuers to reach every village on Saturday.

Chinese Premier Wen Jiabao (Front R) visits the quake-hit area at Zhaotong city of Yunnan Province, Sept 8, 2012. [Photo/Xinhua]