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"Clones narrow the race's genetic structure, they're like a photocopy," said Demyda.

"China's program to electrify road transport has set an example for the world in green development approaches," said Erik Solheim, executive director of the UN Environment Programme (UNEP).

"Considering our current operation status, we are able to complete and may even exceed our global expansion goal of 200 cities," said Chris Martin, Mobike vice-president and head of its overseas expansion business. Much of that expansion will be domestic, but he said Mobike will cover more countries in the second half of the year.

"Compulsory education should not only be free but, more importantly, free of exams," Yang said.

"China welcomes enterprises from all over the world to seize the opportunities brought by greater opening-up, to expand cooperation and better achieve win-win results," Li said in a congratulatory letter saluting the BASF smart Verbund petrochemical project in Zhanjiang, Guangdong province, over the weekend.