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"Essentially, the debt problem is related to development issues, which should prevent the liquidity crisis in the short term and ensure adequate capital in the long term."

"Despite the slower start, economic momentum is supporting rising passenger demand in 2018," said Alexandre de Juniac, IATA's director general and CEO. "That said, concerns over a possible trade war involving the US could have a serious dampening effect on global market confidence, spilling over into demand for air travel," the IATA CEO noted.

"DiDi and 99, two young companies founded in 2012, are going to do bigger things together," DiDi's founder and CEO Cheng Wei recently told Brazilian executives and employees following the sale.

"Every time I went to the villages, local villagers welcomed me warmly. Though it is not easy, I think it is worthwhile," Li said.

"Every country should uphold the 'polluter pays principle' (also known as PPP) and producer responsibility. China is upholding the PPP principle when it stops accepting other countries' waste," she said.