More interesting is that Chinese tv producers have taken notice and like all things, have actually built multiple homegrown shows that appear to borrow (steal/plagiarize) plot lines and ideas from BBT. Particularly is one popular show called iPartment. (爱情公寓)
Of course, Big Bang is no stranger to imitation. There was that other story about the duplicate show out of Belarus, The Theorists, that even Chuck Lorre commented on in one of his regular end of episode vanity cards. Of course, in that case, when the actors found out that they were cast in a rip of BBT, they wanted nothing to do with it. haha
Sources: Why Is The Big Bang Theory Big in China? and video found there 爱情公寓抄袭生活大爆炸片段