BEIJING - Policies launched this year to tighten the rise in housing prices have not been well implemented, Premier Wen Jiabao said on Sunday, though the central government will continue its efforts to maintain prices at a reasonable level.

He made the remarks while taking questions from netizens while visiting China National Radio, according to a report on the station's website.

"I made a promise to the Chinese people last year that I would try to keep housing prices at a reasonable level during my tenure, and I won't shrink from the goal," Wen said.