YA’AN, China — Residents huddled outdoors Saturday night in a town near the epicenter of a powerful earthquake that struck the steep hills of China’s southwestern Sichuan province, leaving at least 160 people dead and more than 6,700 injured.Saturday morning’s earthquake triggered landslides and disrupted phone and power connections in mountainous Lushan county five years after a devastating quake wreaked widespread damage across the region. The village of Longmen was hit particularly hard, with authorities saying nearly all the buildings there had been destroyed in a frightening minute-long shaking by the quake.In nearby Ya’an town, where aftershocks could be felt nearly 20 hours after the quake, residents sat in groups outside convenience stores watching the news on television sets. Fourteen-year-old Wang Xing sat with her family on chairs by the roadside in the cool night air, a large blanket on her lap.Wang and her relatives said they planned to spend the night in their cars. “We don’t feel safe sleeping at home tonight,” said Wang, a student. She said the quake left tears on the walls of her family’s house. “It was very scary when it happened. I ran out of my bed and out of the house. I didn’t even have my shoes on.”Along the main roads leading to the worst-hit county of Lushan, ambulances, fire engines and military trucks piled high with supplies waited in long lines, some turning back to try other routes when roads were impassable.