Jokes are printed one after another.

An Indian came to China for a trip. After getting off the plane, he booked a plane ticket to India on his way to the hotel and left China quietly.

After returning to India, the father asked his son strangely, "Why did you just return to China?"

The son said with a lingering fear, "Signs are posted in all the streets and alleys, which say' printing',' laser printing',' fast printing',' door-to-door printing' and' 3D printing'. I'm afraid I won't see you if I don't run fast! "

Father said: Thanks to your previous study of Chinese, you are very lucky.