To do：

1.Write a mobile phone charger guide: "How to'mimic charging' without electricity".

2.Write umbrella tips: "How to 'easily' leak on rainy days".

3.After waking up, squat by the bed and say to the mattress: "Yesterday you supported my 3 roll-overs; thanks for your hard work."

4.Record: "How much your heart rate increases every 5 minutes (by the clock)".