Chinese Premier Wen Jiabao arrived in Tokyo on Sunday afternoon at the start of a three-day official visit to Japan.
Wen flew in from South Korea's southern resort island of Jeju after winding up an official visit to South Korea and attending the third trilateral summit of China, Japan and South Korea.
During the summit, three countries agreed on plans to further promote cooperation among them.
Premier Wen, South Korean President Lee Myung-bak and Japanese Prime Minister Yukio Hatoyama agreed to form a permanent secretariat to be tasked with facilitating tripartite cooperation.
The three leaders also reached consensus on such issues as deepening mutual understanding and trust, and expanding cooperation in trade, investment, finance, environmental protection and circular economy.
They also exchanged views on the sinking of the South Korean corvette Cheonan in March.
Besides Japan, Wen will also visit Mongolia and Myanmar.