About 90 hours after the 7.8 magnitude earth quake, rescuers could still detect signs of life in the rubble of Hangwang Town, of Mianzhu City, according to sources with the Chinese national rescuing team Friday.

"The possiblity is very great that we can rescue the buried," said a team member.

Rescue work has come to a critical stage on Friday as survival chances for those trapped are slim after the first 72 hours.

"Giving-up is excluded from our dictionary," said the rescuing team member.

The government has vowed not abandon the search for survivors.

"Where there is a beam of hope, we will spare no efforts to save the trapped," said Chinese Premier Wen Jiabao in his work tour at the earthquake hit regions.

Rescuers have saved a student from the earthquake debris in Beichuan Middle School, 80 hours after the earthquake hit Beichuan town.

Rescuers said they could still hear weak yelling for help from under the collapsed building, and are expecting more miracles.

(Xinhua News Agency May 16, 2008)