The local government will "spare no effort" to guarantee the "absolute safety" of the G20 summit to be held early next month in Hangzhou, Zhejiang province, said the city's top official.

Zhao Yide, Party chief of Hangzhou, said on Monday that local authorities have taken adequate measures to ensure the safety of participants and residents.

The 11th G20 summit, to be held Sept 4 and 5, will be chaired by President Xi Jinping, according to the Ministry of Foreign Affairs.