HANGZHOU - Chinese President Xi Jinping on Monday urged China and Britain to deepen political mutual trust and communicate and cooperate in various fields to achieve more stable and better development of their ties.

Xi made the remarks when meeting with British Prime Minister Theresa May on the sidelines of the G20 summit in the eastern city of Hangzhou.

The year 2016 marks the start of the "Golden Era" of China-Britain relations, and 2017 marks the 45th anniversary of the two countries establishing diplomatic relations.

China is willing to work with Britain to lift the "global comprehensive strategic partnership for the 21st century" between the two countries to a higher level, said Xi.

The two countries should continue to promote pragmatic cooperation in economy and trade, investment, energy, infrastructure and finance, and expand cooperation in emerging areas of urbanization, high technology and clean energy, Xi said during the meeting.

The two sides should also actively discuss mechanism for law enforcement cooperation and proceed with cooperation in anti-corruption, fugitive repatriation and asset recovery.

They should also strengthen cooperation over international hot spot issues and within the frameworks of the United Nations, G20 and Asian Infrastructure Investment Bank, Xi said.

May congratulated China on having successfully hosted the G20 Hangzhou summit. She added the two countries are in the "Golden Era" for bilateral ties.

Britain is committed to actively deepening comprehensive strategic partnership and enhancing mutual understanding and trust.

She said her country expects to closely cooperate with China in economy and trade, investment, finance, security and law enforcement.