Chinese Vice Premier Zhang Gaoli (L back) and Singapore's Deputy Prime Minister Teo Chee Hean (R back) attend the signing ceremony of bilateral cooperation documents in Singapore, Oct. 22, 2013. (Xinhua/Li Tao)

Chinese Vice Premier Zhang Gaoli and Singapore's Deputy Prime Minister Teo Chee Hean co-chair the 6th China-Singapore Tianjin Eco-City Joint Steering Council Meeting in Singapore, Oct. 22, 2013. (Xinhua/Liu Weibing)

Chinese Vice Premier Zhang Gaoli and Singapore's Deputy Prime Minister Teo Chee Hean co-chair the 6th China-Singapore Tianjin Eco-City Joint Steering Council Meeting in Singapore, Oct. 22, 2013. (Xinhua/Liu Weibing)