source: Admission to Tsinghua is extremely competitive.
target: It is very hard to be admitted to Tsinghua.
references: It is very hard to be admitted to Tsinghua. Getting admitted to Tsinghua is difficult.  There is a lot of competition. It is really hard to get into Tsinghua. It is extremely competitive to get in to Tsinghua. To get into Tsinghua is really hard. Tsinghua admission is extremely competitive. Admission to Tsinghua is very competitive. Tsinghua is very hard to get into. It is not easy to get into Tsinghua. There is alot of competition to get into Tsinghua.