Energetic 21 on AllMovie

Chan Chuen directed this story about the many problems besetting Hong Kong youth when they reach that "energetic" age of 21. One poor rich kid has parents who do not really care much about him and another suffers under considerable stress, yet another fellow has to live down the stigma of his mother's profession (she is a high-class hooker), and although a young auto mechanic is not economically in the same rarified strata as these wealthy scions, he likes to hang out with them anyway. This world seems almost too secure to last for long, but the bored young men continue in their pursuits of auto racing and disco dancing as though nothing else mattered.