How long did you use your mobile phone to surf the Internet last week?

0 days = 1; 1 day = 2; 2 days = 3; 3 days = 4; 4 days = 5; 5 days = 6; 6 days = 7; 7 days = 8

7.25

1.64

How long did you use WeChat yesterday?

0 - 30 minutes = 1; 30 minutes - 1 hour = 2; 1 - 1.5 hours = 3; 1.5 - 2 hours = 4; 2 - 2.5 hours = 5; 2.5 - 3 hours = 6; 3 to 3.5 hours = 7; 3.5 - 4 hours = 8; More than 4 hours = 9

4.71

2.72

How long did you use WeChat last week?

0 days = 1; 1 day = 2; 2 days = 3; 3 days = 4; 4 days = 5; 5 days = 6; 6 days = 7; 7 days = 8

7.25

1.68

How long did you use today’s headlines (or interesting headlines) yesterday?

0 - 30 minutes = 1; 30 minutes - 1 hour = 2; 1 - 1.5 hours = 3; 1.5 - 2 hours = 4; 2 - 2.5 hours = 5; 2.5 - 3 hours = 6; 3 to 3.5 hours = 7; 3.5 - 4 hours = 8; More than 4 hours = 9

1.80

1.67

How long did you use today’s headlines (or interesting headlines) last week?

0 days = 1; 1 day = 2; 2 days = 3; 3 days = 4; 4 days = 5; 5 days = 6; 6 days = 7; 7 days = 8

2.94

2.50

I used Weibo for a long time yesterday.

0 - 30 minutes = 1; 30 minutes - 1 hour = 2; 1 - 1.5 hours = 3; 1.5 - 2 hours = 4; 2 - 2.5 hours = 5; 2.5 - 3 hours = 6; 3 to 3.5 hours = 7; 3.5 - 4 hours = 8; More than 4 hours = 9

2.32

2.03

Last week, I used Weibo for a long time.

0 days = 1; 1 day = 2; 2 days = 3; 3 days = 4; 4 days = 5; 5 days = 6; 6 days = 7; 7 days = 8

4.07

2.82

How long did you use QQ yesterday

0 - 30 minutes = 1; 30 minutes - 1 hour = 2; 1 - 1.5 hours = 3; 1.5 - 2 hours = 4; 2 - 2.5 hours = 5; 2.5 - 3 hours = 6; 3 to 3.5 hours = 7; 3.5 - 4 hours = 8; More than 4 hours = 9

2.17

2.08

How long you used QQ last week

0 days = 1; 1 day = 2; 2 days = 3; 3 days = 4; 4 days = 5; 5 days = 6; 6 days = 7; 7 days = 8

3.99

2.79

How long did you use TikTok (or Aauto Quicker, watermelon, volcano, etc.) yesterday?

0 - 30 minutes = 1; 30 minutes - 1 hour = 2; 1 - 1.5 hours = 3; 1.5 - 2 hours = 4; 2 - 2.5 hours = 5; 2.5 - 3 hours = 6; 3 to 3.5 hours = 7; 3.5 - 4 hours = 8; More than 4 hours = 9

4.06

2.80

How long did you use TikTok (or Aauto Quicker, watermelon, volcano, etc.) last week?

0 days = 1; 1 day = 2; 2 days = 3; 3 days = 4; 4 days = 5; 5 days = 6; 6 days = 7; 7 days = 8

5.79

2.65

How long did you use bilibili yesterday?

0 - 30 minutes = 1; 30 minutes - 1 hour = 2; 1 - 1.5 hours = 3; 1.5 - 2 hours = 4; 2 - 2.5 hours = 5; 2.5 - 3 hours = 6; 3 to 3.5 hours = 7; 3.5 - 4 hours = 8; More than 4 hours = 9

2.57

2.26

How long did you use bilibili last week?

0 days = 1; 1 day = 2; 2 days = 3; 3 days = 4; 4 days = 5; 5 days = 6; 6 days = 7; 7 days = 8

3.92

2.73