China is actively promoting the use of clean coal for heating and replacing low0quality bulk coal, according to the 2019 annual report on China's policies and actions on climate change released by the state council information office on Thursday. During the two heating seasons of 2017-2018 and 2018-2019, a total of 3.6 billion square meters of clean heating area was added in the north, accounting for about 50.7% of the total,and about 100 million tons of bulk coal was replaced.