China's ministry of foreign affairs said it always welcomes foreign citizens, including those of the United States.
In 2017, the US military had dropped a MOAB, more commonly known as the "Mother of All Bombs," on the Islamic State.
Last month, external affairs minister Sushma Swaraj and her Chinese counterpart Wang Yi had held extensive talks in New Delhi
Relations between the world's two largest economies have plumbed new depths under Trump, with a trade war and disagreements over Taiwan and the South China Sea.
Canada has said the detentions are unacceptable and US Secretary of State Mike Pompeo has said China should free the men.
The drone passed the tests for acceptance before it was delivered in Chengdu, setting a new record for China’s high-end UAV export.
India and China were at loggerheads last year with both armies in a near confrontation at Doklam during the 73-day standoff.
China had criticised Britain and the European Union accusing it of "double standards" for not mentioning Meng Wanzhou's arrest in Vancouver.
US President Trump has signed into law the Reciprocal Access to Tibet Act.
China said the US should drop the prosecution of the Chinese hackers
Xi also called both the state economy and the "non-state economy" to help in the development process.
China's relations with Canada have nosedived in the past week after Huawei CFO Meng Wanzhou was arrested on December 1st
The White House has said China had committed to start buying more American products
SUSTC had earlier said Jiankui was on unpaid leave since February and the experiment wasn't conducted on its premises.
Many scholars spoke against the research, saying it violated ethical norms and was unnecessary