China and France agreed to jointly cope with risks and challenges, fight protectionism in any form and boost multilateralism and economic opening-up.
Indian Foreign Secretary Subramanyam Jaishankar said India attaches great importance to its relationship with China.
January's air pollution was partly due to the Lunar New Year custom of setting off fireworks and crackers.
Chinese State Councilor Yang Jiechi made the remarks during a phone call with US Secretary of State Rex Tillerson.
The pledge came from a meeting of the Political Bureau of the Communist Party of China (CPC) Central Committee.
In 2016, natural disasters forced the relocation of over 9.1 million people and affected nearly 190 million people.
Nobel laureate Chen Ning Yang and Turing Award-winner Andrew Chi-Chih Yao have given up their foreign citizenship.
A man in Nanjing, Jiangsu province, was placed under investigation for threatening two doctors, blaming them for his aunt's death from pneumonia.
China has set a new record for copyrights, processing more than 2 million new registrations last year.
Central and eastern China are feeling the effects of this year's biggest cold wave.