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You, also a member of the Secretariat of the CPC Central Committee, pointed out that Xi's words have clarified some people's vague understanding and doubts and are of great importance both theoretically and practically.

Hong Kong has made historic contribution to the country's reform and opening-up and it also has seized valuable opportunities from the process to create even greater splendor, said Xie Feng, Commissioner of China's Foreign Ministry in the HKSAR.

This year's WLSC, which ends on Monday, focuses on medicine and health, agriculture and food safety, environmental science, biotechnology and economy.

China will continue to adhere to the basic national policy of opening up, said Wang, adding that China will promote the construction of the Belt and Road Initiative, firmly support the multilateral trading system, and oppose unilateralism and trade protectionism.

"The Hong Kong-Zhuhai-Macao bridge can be seen as a unique application of wireless technology, highlighting the high-quality products and advanced technology provided by China's communication sector," said Fang.