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"For ofo and Mobike, the deals can accelerate their growth by tapping into tech heavyweights' sizable user bases. But the impact is not decisive. The battle for supremacy still hinges on their bikes' availability and quality," Zhang said.

"Further opportunities remain in the lower-tier cities as demand in the top-tier is already saturated. The growth rate of monthly active users in top-tier cities only hit 10 percent by the third quarter of last year," Tsang said.

"Going ahead we are planning a series of events, like a bridge between Indonesian students who are studying in China and Chinese companies that set up branches in Indonesia," Wang added.

"For some of the residents, garbage-sorting is too trivial a matter to put into practice," she said. "Some of them even threw garbage at our volunteers."

"Green finance also requires a lot of talents," said Ma, pointing to the shortage of talents at local governments and banking intuitions.