Russian President Vladimir Putin and Chinese President Xi Jinping take part in a photo ceremony at the Shanghai Cooperation Organisation (SCO) summit in Tianjin, China, September 1, 2025. Sputnik/Vladimir Smirnov/Pool via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY.
Chinese President Xi Jinping, Indian Prime Minister Narendra Modi and Russian President Vladimir Putin speak during a meeting at the Shanghai Cooperation Organisation (SCO) summit in Tianjin, China, September 1, 2025. Sputnik/Alexander Kazakov/Pool via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY.
Chinese President Xi Jinping, Indian Prime Minister Narendra Modi and Russian President Vladimir Putin speak during a meeting at the Shanghai Cooperation Organisation (SCO) summit in Tianjin, China, September 1, 2025. Sputnik/Alexander Kazakov/Pool via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY.
Journalists look at a screen broadcasting Chinese President Xi Jinping delivering a speech during the plenary session of the 2025 Shanghai Cooperation Organisation (SCO) summit in Tianjin, China September 1, 2025. REUTERS/Maxim Shemetov
Chinese President Xi Jinping attends a photo session for participants of the Shanghai Cooperation Organization (SCO) Summit 2025 at the Meijiang Convention and Exhibition Centre in Tianjin, China, September 1, 2025. SUO TAKEKUMA/Pool via REUTERS
Participants of the Shanghai Cooperation Organization (SCO) Summit 2025 pose for photos with Chinese President Xi Jinping at the Meijiang Convention and Exhibition Centre in Tianjin, China. SUO TAKEKUMA/Pool via REUTERS
Leaders and officials, including Chinese President Xi Jinping and Russian President Vladimir Putin, attend a photo ceremony at the Shanghai Cooperation Organisation (SCO) summit in Tianjin, China August 31, 2025. Sputnik/Alexander Kazakov/Pool via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY.

By Laurie Chen and Mei Mei Chu

TIANJIN (Reuters) -Chinese President Xi Jinping urged leaders at a regional summit to leverage their "mega-scale market" on Monday, while Russian President Vladimir Putin showed support for Xi's ambition for a new global security and economic order that poses a challenge to the United States.

The Shanghai Cooperation Organisation (SCO) has set a model for a new type of international relations, Xi said in opening remarks addressing more than 20 world leaders at a two-day summit held in northern China's port city Tianjin.

"We should advocate for equal and orderly multipolarisation of the world, inclusive economic globalisation and promote the construction of a more just and equitable global governance system," he said.

"We must take advantage of the mega-scale market... to improve the level of trade and investment facilitation," said Xi, urging the bloc to boost cooperation in fields including energy, infrastructure, science and technology, and artificial intelligence.

Putin said the grouping has revived "genuine multilateralism" with national currencies increasingly used in mutual settlements.

"This, in turn, lays the political and socio-economic groundwork for the formation of a new system of stability and security in Eurasia," he said.

"This security system, unlike Euro-centric and Euro-Atlantic models, would genuinely consider the interests of a broad range of countries, be truly balanced, and would not allow one country to ensure its own security at the expense of others.”

Indian Prime Minister Narendra Modi and other leaders from Central Asia, the Middle East, South Asia and Southeast Asia attended the opening ceremony in a major show of Global South solidarity.

The security-focused bloc, which began as a group of six Eurasian nations, has expanded to 10 permanent members and 16 dialogue and observer countries in recent years.

Xi called on organisation partners to "oppose Cold War mentality and bloc confrontation" and to support multilateral trade systems. That was an apparent dig at U.S. President Donald Trump's tariff war which has disproportionately affected developing economies such as India, whose exports were hit with a 50% levy last week.

China will provide 2 billion yuan ($280 million) of free aid to member states this year and a further 10 billion yuan of loans to an SCO banking consortium, he added.

Speaking on the sidelines of the meeting on Sunday, United Nations Secretary-General Antonio Guterres said China played a "fundamental" role in upholding global multilateralism.

Beijing has also used the summit as an opportunity to mend ties with New Delhi.

Modi, who is in China on his first visit in seven years, and Xi both agreed on Sunday their countries are development partners, not rivals, and discussed ways to improve trade ties amid the global tariff uncertainty.

($1 = 7.1529 Chinese yuan renminbi)

(Reporting by Laurie Chen and Mei Mei Chu in Tianjin, Liz Lee and Qiaoyi Li in Shanghai; Editing by Christopher Cushing and Lincoln Feast.)