BEIJING/HONG KONG (Reuters) -Shares of Chinese property developers rose on Friday as investors expected authorities to announce more measures to stabilise the crisis-hit sector, with fresh data showing the fastest drop in new home prices in more than nine years. Waves of property market support measures over the past two years have failed to turn a sector which accounted for a fifth of economic activity at its peak and remains a drag on growth, but markets are betting on more decisive action later in the day. China's housing ministry, central bank, the National Financial Regulatory Administration and the Ministry of Natural Resources will hold a news briefing on Friday afternoon about policies to ensure completion of housing projects.