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"China's role [in VR development] has been on the rise -- 95 percent of the world's VR equipment is produced in China, and many VR content in app stores now comes from Chinese developers," said Alvin Graylin, president of HTC China.

Xi said military ties between the two countries are an important symbol of their high-level and distinctive bilateral relations and the highlights and important support of the strategic cooperation.

According to an industry report, China's retail book market size surpassed 80 billion yuan (about 11.6 billion U.S. dollars) in 2017, up 14.55 percent year on year. Children's books were the main driver of market growth, with the children's sector accounting for over one-third of overall growth in the Chinese market.

Belgium, as a founding member of the European Union (EU), is also home to the EU headquarters.

Augusto Santos Silva said the two sides had discussed a number of topics, including consumer protection and mutual recognition of academic degrees in higher education.