Chinese Premier Li Keqiang and the leaders of Cambodia, Laos, Myanmar, Thailand and Vietnam visited an exhibition Wednesday in Phnom Penh highlighting achievements of Lancang-Mekong Cooperation. Premier Li said connectivity of infrastructure is the priority of the cooperation mechanism. He added that China will help other LMC countries with techniques to boost economic development and improve people's livelihood. Meanwhile, LMC leaders heaped praise on Chinese bike sharing company Mobike as a new growth driver of the global economy.