BEIJING, Nov. 3 (Xinhua) -- To Liu Lei, it was meaningful to take the metro, instead of driving, to reach the China Energy and Environment Summit, which concluded here on Tuesday.

    "After a heavy snow Sunday, it's really cold in the morning. I spent nearly one hour on Line 5 and Line 10 to come to the venue," said the 44-year-old man, who is a chief advisor to a Taiwan software company.

    Liu, a self-branded environmentalist from Sichuan Province, said he wants to use his actions to support environmental protection and China's efforts to cope with the climate change.

    He, along with other 300 government officials, entrepreneurs and industry experts, was invited to the 2-day forum to discuss clean energy in China.

    He said Beijing's public transit system has developed quickly over the last several years and is capable of providi...

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