2011-2-17号,中国阴历15号,也是法律规定北京市五环内最后放炮的一天。
吴昊昊在这天把两个红色的大炮放在安定门的大鼎上,并点燃。
17th February, 2011, 15th on the Chinese calendar, it's also the last day for firecrackers by law.
Wu Haohao put two big red crackers on the...展开ding-cauldron at Anding Gate. Then set them off.