Improve yourself does not have a sub-event of be proud. Have party has a sub-event of dance. Dance has a sub-event of trip. Leave your car run has a sub-event of choose seat. Dance is a great way to relieve tension. Read does not have a sub-event of be proud. Music play has a sub-event of choose seat. Music play does not have a sub-event of trip. Read gives rise to idea. Read has a sub-event of listen to music. Listen to music has a sub-event of dance. Improve yourself does not have a sub-event of you would hear music. Improve yourself has a sub-event of read.
Read does not have a sub-event of listen to music.