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NANJING, July 25 (Xinhua) -- Chinese Vice Premier Hu Chunhua on Saturday urged efforts to focus on quality in the joint pursuit of the Belt and Road Initiative, promote higher level of opening-up and stabilize the overall performance of foreign trade and foreign investment.

The G20 members should strengthen cooperation in vaccine development and establish an "anti-pandemic firewall," said Wang, adding that China is actively considering putting forward a proposal on maintaining data security.

"Mars mission would put China among space leaders ... A Mars landing is among the most challenging feats in spaceflight," said the Science magazine in a news piece published on June 25.

The prefecture is part of the Yunnan pilot free trade zone (FTZ) inaugurated on Aug. 30 last year to facilitate trade, investment and logistics between Yunnan and neighboring Myanmar, Vietnam and Laos. The FTZ also covers parts of Kunming, the provincial capital, and Honghe Hani and Yi Autonomous Prefecture.

Xi chatted with residents in a street, asking them about the prices of vegetables.