雙響兒炮 [双响儿－]

Jyutping soeng1 hoeng2 ji4 paau3
Pinyin shuāng xiǎngr pào

Definitions (Wiktionary)
  1. noun
    double-bang firecracker (which goes off twice, once on the ground, then again louder in the air)
    (syn.) 二踢腳, 雙響炮, 天地炮, 双响, 二踢脚, 雙響, 双响炮