China should build a solid foundation in the domestic financial market to support green finance, a senior official with the United Nations Environment Program told China Daily.

Green finance - financing environmentally sustainable growth - is groundbreaking, said Simon Zadek, who was co-leader of the Green Finance Study Group to the G20 Summit held in Hangzhou, Zhejiang province, in early September.

Zadek said that China is taking the lead in promoting green finance, and it has become a key to reaching the climate change targets set in the Paris climate deal.