The hall that collapsed on Thursday evening in Yazhuang village when more than 200 guests were present was an old structure, Xinhua reported Friday citing Yu Manxing, a county government spokesman.
At least 91 people were injured and taken to hospital, including 11 who remained in serious condition, Yu said.
"Just a few minutes after I sat down to dine, I heard creaking wood. Then the roof fell the minute I looked up," said Chen Dianzhong, who is being treated for injuries to his waist and legs.
A preliminary investigation found that a large amount of snow overburdened the roof, causing it to cave in, Yu said.