More than fifty percent. A survey in official website of Nankai University Campus shows that the enrollment rate of Bo-age students is over 50%, which is close to 100%. During my school days, I have the opportunity to go abroad for exchange at public expense, and I have five Bo Ling courses: Mathematics, Physics, Chemistry, Biology and Economics. In addition to adapting to the training mode of one system and three systems, the students in Boling class have many policy advantages in training.