Art lovers around the world have thought about this question for so many years: what is the secret behind the Mona Lisa's smile? However, they can ask Mona Lisa herself in the interactive exhibition   in Beijing. This exhibition brings the 500-year-old painting to life. Now Leonardo da Vinci's famous painting can move her head and wave   her hand in 3D, and even answer questions. She can answer the questions about her life, her age and so on. But when she talks she doesn't speak Italian but Chinese like: "Da jia hao, wo jiao Mengna Lisha. Hen gao xing jian dao ni men." The new, digital   picture of Mona Lisa is the center piece of the World Classic Interactive Arts Exhibition in Beijing. You can also see other world-famous paintings such as Leonardo da Vinci's Last Supper. Last Supper is another picture that they made alive with 3D. In this picture, Jesus   can walk and talk with his believers  . It took the organizer Wang Hui and over 400 digital artists in South Korea two years to make the picture, at a cost of around 50 million yuan. He says, "What's special about it is that it's the first time to use computer technology   to make her speak and move." So what does the Mona Lisa say if you ask her why she is smiling? Which of the following is TRUE?
Wang Hui and his team spent 2 years making the digital pictures. The digital paintings cost Wang Hui 50,000 yuan. Wang Hui made this painting with some Chinese artists. About 400 artists wanted to buy the digital paintings.