Complex sentence: While in high school, Liu participated in a student exchange program and visited America in 1998; this experience changed her views about life in America and made her aware that in American universities, she would be able to study a variety of subjects.
Split into simpler sentences: While in high school, Liu participated in a student exchange program and visited America in 1998. The program also piqued her interest in American universities, where she relaized she would be able to study a variety of subjects.