(Xinhua)
Updated: 2008-05-22 20:41

MIANYANG, Sichuan Province  -- Chinese Premier Wen Jiabao made his second trip to the quake-battered zone on Thursday afternoon to supervise over disaster relief work.

Wen flew to Mianyang, in southwest Sichuan Province, the area hit hardest by the magnitude 8 earthquake on May 12, and took helicopter to Tangjiashan in Beichuan county to oversee the situation of a quake lake there.

In Sichuan, there are 33 "quake lakes" formed by landslides that blocked rivers. The one in Tangjiashan is one of the three largest.

Those lakes, formed as water was blocked from following river beds by rock and mud slides set off by the earthquakes, were very dangerous as the water level of some quake-lakes has risen, threatening vast areas.

His previous trip to the area was on May 12, just hours after the major tremor rocked Sichuan at 2:28 p.m.