Vice-Premier Li Keqiang and other senior leaders on Thursday joined national lawmakers in panel discussions on the Government Work Report.

The report was delivered by Premier Wen Jiabao on Tuesday when the 12th National People's Congress, the top legislature, opened in Beijing.

While joining NPC deputies from the southwestern province of Guizhou to deliberate on the report, Li urged earnest implementation of environmental protection standards as many industrial enterprises in eastern regions have moved to central and westerns regions like Guizhou for lower costs, which raises environmental concerns.