Once upon a time, in the West Lake village, a servant lived with his master. After service of 30 years, his master became ill and was going to die. One day, the master called his servant and offered him for a wish. It could be any wish but just one. The master gave him one day to think about it.
The servant became very happy and went to his mother to discuss the wish. His mother was blind and she asked her son to wish for her eye-sight to come back. Next, the servant went to his wife. She became very excited and asked for a son as they were childless for many years. After that, the servant went to his father who wanted to be rich and so he asked his son to wish for a lot of money.
The next day he went to his master and made one wish through which all the three (mother, father, wife) got what they wanted.
What was his wish?