So does the wording. Some seem to be in a competition for jokes - rather than for paid companionship. But all come with the disclaimer that no "immoral" or "illegal" services are on offer.

But is it moral to trick an elderly couple into believing you are the prince charming who is going to take away the treasure of their life? It sounds like a cruel joke to me.

Had it been a trip of convenience home, it might be as innocuous as a buddy movie. But this play-acting involves not just two people but also some undiscerning participants. It has the potential of leading to an unpleasant end.

The pressure to start a family comes from many things.

In China, certain traditions are increasingly misaligned with reality, producing such darkly comic situations as hiring an imposter to get through a festive family reunion. It dilutes the joy of the occasion.

Fast-forward 50 years, there may be robots doing this job. Then it'll be boring when every Mr Right looks like the superhero of the day.

Contact the writer at raymondzhou@chinadaily.com.cn.