Suspected rebels stormed a Chinese-operated gold mining site that had recently been launched in Central African Republic, killing nine Chinese nationals and wounding two others Sunday, authorities said.The attack came just days after gunmen kidnapped three Chinese nationals in the countrys west near the border with Cameroon, prompting President Faustin Archange Touadera to travel to China in a bid to reassure investors.The attack on the Chimbolo gold mine began around 5 a.m. when the gunmen overpowered the sites guards and opened fire, said Abel Matipata, mayor of the nearby town of Bambari.