英语翻译More and more young Javanese gathered together and walke

英语翻译
More and more young Javanese gathered together and walked slowly through the night.Joking and chatting,they moved towards the mountain on the edge of the city.They continued to climb until they reached the old temple at the top of the mountain.
After they were inside the temple,they drank their water and ate their moon-cakes-delicious homemade ones,full of dried fruit and nuts.Outside,on the mountain,young people sat cross-legged in circles,chatting and telling each other jokes.And still,in their hundreds,more young people continued to make their way up the mountain to admire the brightly shining moon.
（By midnight,the fireworks had stopped shooting up from the gray city in the valley below them.）But during the night,the sound continued to be heard from the distance.
只要翻译带括号的一句：（By midnight,the fireworks had stopped shooting up from the gray city in the valley below them.）
我想知道,below them 在文中怎么翻译?them是指什么?请分析此句子结构.并翻译,