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Chinese Ambassador to Costa Rica Song Yanbin said the planes symbolize the friendship and cooperation between the two countries.

They will live in the space lab for 30 days before returning to Earth.

Xi said that integrity is needed to ensure a clean political environment, and only by exercising self-discipline and staying away from corruption can officials have a good public image. "We must remember that power is bestowed upon us by the CPC and the people, and must be used to serve the people."

Progress and results in implementation have exceeded expectations with more than 100 countries and international or regional institutions so far involved. In 2015 alone, the investment flow to related countries from Chinese enterprises was about 19 billion U.S. dollars, up 38.6 percent from the previous year.

Ecuador, which currently imports cables worth around 15 million U.S. dollars a year, estimates that it will export cables worth 20 million dollars a year. This joint venture will provide the telecommunications services and high technology to be needed by Latin America.