New party General Secretary Hu Jintao has urged leaders of non-communist parties and people's organisations to increase their participation in the nation's affairs and supervision of the ruling party. At a meeting with the leaders on Saturday, he said progress in the task of nation building could only be achieved through multiparty co-operation. It was the second time in a month that Mr Hu had reached out to non-communist party leaders for help in identifying and solving China's social and economic problems. Last month he visited the headquarters of three major democratic parties to listen to their assessments and rally support for building a well-off society according to the blueprint issued at the 16th party congress. On Saturday Mr Hu underscored the Communist Party's time-honoured tradition of a 'united front' in the revolutionary struggle. This time he mentioned that through participation and democratic supervision, non-communist parties and popular organisations could contribute to the strengthening and improvement of the Communist Party. While democratic supervision should be a mutual effort, the Communist Party, as a ruling party, had an even greater need for supervision from other democratic parties, Mr Hu was quoted as saying. Mr Hu specifically appealed to the leaders of the All China Federation of Industry and Commerce to act as a bridge and reach out to the private sector.