BEIJING, April 27 -- More than half of the proceeds from China's lottery ticket sales in the name of promoting social welfare will be used for the old-age service, according to a government document.

Local governments have also been urged to improve their investment structure and increase support of old age services, according to the document jointly issued by the National Development and Reform Commission, the Ministry of Civil Affairs and a national office for old-age care.

The government should provide guidance to social resources to support their participation, said the document on further promoting old-age care service.

Construction of professional and community-based old age services, such as nursing homes and day-care centers, is a priority in 2015, according to the document.