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China has well over 200 million people aged 60 or above, more than 15 percent of the population, and the figure is expected to reach 243 million by 2020. Geriatric care lags far behind demand and varies greatly between regions.

The guests are scheduled to participate in the G20 Finance Ministers and Central Bank Governors Meeting later this week in Shanghai.

The draft law on deep seafloor resource exploration, submitted for a second reading, stresses that the activity should feature the principles of peaceful use and cooperation.

"It has helped prevent suicide, mental deterioration for those who lost their children and helped them manage emotions," he said.

Tianjin already has an assembly line for Airbus A320 models. More than 250 aircraft have been delivered in Tianjin since 2008.