Great song.
I found the listener review comments quite enlightening.
Some interesting questions posited.
https://www.echinesesong.com/pao-mo-%E6%B3%A1%E6%B2%AB-foam-lyrics-%E6%AD%8C%E8%A9%9E-with-pinyin-by-deng-zi-qi-%E9%82%93%E7%B4%AB%E6%A3%8B-g-e-m/