The train service will become regular next year.
The two sides signaled they are ready to accept compromises to salvage the New START treaty just two weeks ahead of the US presidential election on Nov 3 in which US President Donald Trump faces a strong challenge from Democratic candidate Joe Biden, whose campaign has accused Trump of being soft on Russia.
The two deals will be worth about .78 billion.
The two sides should also jointly safeguard the interests of developing countries as well as regional and international peace and stability, he said.
The trend is making A shares attractive for international investors to optimize portfolios, they said.
The travel rush also will pose new challenges for tourist attractions' epidemic prevention and control efforts, and they should continue to implement an online booking system to make sure tourists travel at staggered time slots, he said.
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The two countries realized the smooth handover of Macao from Portugal to China via negotiation.
The travel time will be reduced to about four and a half hours, State-owned China Railway Corp said on Thursday.
The two leaders also exchanged views on the situation in Syria and global trade, with Xi emphasizing that China has been greatly concerned over Syria's situation, and has always disapproved of the use of force in international relations.
The two largest economies in the world have benefited enormously from bilateral trade and investment. However, it is necessary for them to further boost jobs and profits for both sides, they said.