Property	Nannan	Beibei	Niuniu	Dongdong
Hobbies	Watching movies; Listening to music; Reading books	Listening to music; Blogging; Playing the guitar	Photography; Playing football; Traveling	Listening to music; Playing football; Playing computer games
Personality	Introvert; Good at listening to others; Not good at communicating	Outgoing; Positive and enthusiastic; Happy to help others; Sometimes, ignoring others’ feelings unconsciously	Like playing with others; Not good at listening to others	Outgoing; Humorous; Weak self-discipline
Sleeping pattern	Early to bed, early to rise	Late to bed, early to rise	Early to bed, late to rise	Late to bed, late to rise
Studying style	He/she likes to study in a quiet place on his/her personal.	He/she likes to read out when he/she is studying.	He/she likes to study with others.	He/she likes to study on his/her personal.