1. Stimulated radiation is the first and necessary condition for laser generation, but it is not a sufficient condition.

2. In order to form laser, the working substance must have metastable energy level. This is the second condition for generating laser.

3. At room temperature, absorption is more than emission. Choose a suitable substance to have more electrons at the sub-energy level than at the low-energy level, that is, to form the inversion of the number of particles, so that the stimulated emission is more than absorption. This is the third condition for generating laser.

On-line education in Mars era was officially launched in June, 20 13, offering 9 professional directions (film and television animation special effects, post-synthesis packaging, game art design, indoor and outdoor renderings, architectural interior design, print media design, online media design, UI interactive design, digital painting design), 36 long-term classes, 15 short-term classes.

Mars era training base:

During the Mars era, there were more than 20 training bases in Beijing, Shanghai, Guangzhou, Shenzhen, Hangzhou, Chengdu, Wuhan, Xi, Chongqing, Nanjing, Tianjin, Shijiazhuang and Fuzhou.

Beijing Campus is located in Haidian High-tech Park, Beijing, across the road from the Intermediate Architectural Art Park. As a member of science and technology enterprises and software enterprises, the Mars era has become a leading creative animation enterprise representing Beijing. Shanghai Campus is located in Zhangjiang Hi-tech Park, Pudong New Area, Shanghai, adjacent to Shanda Literature, surrounded by many well-known enterprises in the industry such as Jiucheng, Netease and Shanda.

Complete and advanced teaching equipment, excellent teachers, strong artistic atmosphere and perfect management mechanism have created a good learning environment and employment environment for students.