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Cheung envisioned that Hong Kong, given its advantages under the "one country, two systems "policy, could serve as a "two-way gate" to the Chinese mainland and the international market in the new era.

Chief Executive Carrie Lam Cheng Yuet-ngor hopes to talk with the protesters, Chan said. However, he said, that will be difficult because it is not easy to identify them, and nobody can promise violent protests will stop if they make peace with the government because the protesters claim they have no leaders.

Chicago was the fifth-highest-scoring North American city in this analysis?by GeekWire contributor Tim Ellis that ranked potential Amazon HQ2 cities on data.

Chen Tao, an analyst at the Beijing-based consultancy Analysys, said Amazon has strong competitiveness and a good reputation in its global logistics, warehouses and supply chain, and should step up localization efforts amid increasing competition from domestic online retailers.

Chen Gang, Party chief of Xiongan New Area, made the remarks at an international forum on ultra-low-energy building that opened in the area on Wednesday and will end on Friday.