Last night, when I got into a cab, there was a red laminated sign with Chinese calligraphy attached to the ceiling. I immediately asked the taxi driver what it said, and he told me he had no clue. He said he couldn't read Chinese, and then he explained that the sign was hung up by a Chinese-Thai guy who rents the car to him.
I was left feeling very curious about the sign. Considering that it was Chinese, I wondered if it had something to do with good luck. Or, perhaps it was there to protect the car from danger and "evil spirits". Or, maybe - just maybe - it was an excerpt from an ancient Chinese poem about taxi drivers.