President Xi Jinping gives the keynote speech at the opening of the International Horticultural Exhibition 2019 in Beijing's Yanqing district on Sunday. [Photo/China Daily]

China is ready to work with other countries to build a better community with a shared future for mankind, President Xi Jinping said on Sunday.

Xi made the remarks during the opening ceremony of the International Horticultural Exhibition held beside the Great Wall in Beijing's Yanqing district.

"In the face of environmental challenges, all countries are in a community with interlinked destinies, and no country is immune," Xi said.

Noting that a beautiful homeland is the shared aspiration of all, Xi called for joint efforts with other nations to address such global problems as climate change and marine pollution.

"Every generation has its own mission. Our efforts to conserve the ecosystem will benefit not only this generation, but many more to come," he said.

During the Second Belt and Road Forum for International Cooperation that ended on Saturday, participants agreed to pursue open and green development in Belt and Road cooperation, Xi said.

He pointed out that countries should advocate the value of green development that reveres and cares for nature "so that blue skies, green fields and clear waters will be a vision cherished by all".

A sound environment promises great economic potential, generates good returns, and contributes to economic and social stability, Xi said.

"I have always said that green mountains and clear waters are indeed mountains of gold and silver, and that environmental improvement means great productivity," he added.

Xi called on countries to maintain the overall balance of the Earth's ecosystem so that the future generations will not only have material wealth, but also enjoy a good ecology.

"We must protect this planet like our own eyes, and cherish nature the way we cherish life," Xi said.

Vicente Gonzalez Loscertales, secretary-general of Bureau International des Expositions, said at the opening ceremony that the exhibition has attracted more than 110 countries and international organizations as well as over 120 nonofficial exhibitors.

The 162-day exhibition is poised to impress an expected 16 million visitors from home and abroad with a huge collection of plants, flowers and pavilions, as well as many ideas for green development.