MADONNA has expressed a wish to stage a charity concert in China in support of Beijing's bid for the 2000 Olympics - and pledged to abide by China's rules on decency, according to the Hong Kong China News Agency. The agency quoted Li Jun, from Central Television of China, as saying that Madonna would ''respect and accept the demands and conditions'' imposed by the Chinese. Ms Li, in Boston to attend an international conference on arts and communication, said she had been approached by Madonna's management. She said she had been asked to fly to Hollywood to discuss the China trip with Madonna. The report said the pop star had already expressed a wish to stage a show in China. ''But since there is a lot of nudity in Madonna's shows, she is still a controversial figure on the mainland. It appears that Beijing has not responded positively to her wish,'' Ms Li said. The report said Beijing would now ''seriously consider'' allowing Madonna to stage a concert. In Macau, a Chinese official conceded that although Beijing faced some problems in its Olympic bid, it would continue the fight. A vice-director of Xinhua (the New China News Agency), Zhong Guangyao, said Beijing would tackle the language barrier and pollution. He was speaking at a ''Walk to Back the Beijing Olympics'' organised by a youth group in the Portuguese enclave. Mr Zhong said Beijing households would be provided with gas instead of coal to curb air pollution.