This is a line from the famous "Good Song" in "Dream of Red Mansions":

If you train well, you will not be able to become a strong leader in the future.

It means that if your children are well educated, they may become robbers when they grow up.

Who chooses to live in Fireworks Alley?

It means that I wanted to choose a talented man as my husband, but ended up living as a prostitute.

Things go against your wishes, your heart is higher than the sky, your life is thinner than paper... this is probably what it means.