catch the big 'if' in the last paragraph

http://english.people.com.cn/200601/21/eng20060121_237208.html

China to build world's first "artificial sun" experimental device





If a device is developed that can withstand temperatures as high as 100 million Celsius degrees and control a deuterium-tritium reaction, it will be as though an "artificial sun" had been created able to supply infinite, clean energy for human beings.


Source: Xinhua