National Security Advisor Ajit Doval Wednesday met Chinese Vice President Han Zheng, who said China and India should gradually resume institutional dialogue as well as exchanges and cooperation in fields such as economy, trade and culture to bring bilateral relations back onto the track of stable development. Ajit Doval, who is heading the Indian delegation, arrived here on Tuesday to take part in the 23rd round of the Special Representatives talks being held after a gap of five years. The last meeting was held in 2019 in Delhi.