One man, who lost his son when the Hongbai Middle School crumbled, saw the troops trudge into the hilltop town just 13 hours after the earthquake struck.

• 一个男人的儿子在红白中学的校舍倒塌时被埋。他看到，地震发生13小时后部队就长途跋涉进入这个位于山顶的城镇。