Get a flat tire

During I returned home in the evening, My rear tire stepped something hard. After a few minutes, the tire's air had been empty. It was getting a flat tire.
I changed to spare tube on the road.

Foresee

The title was "dream of foresee" . It was a famous series by Keigo Higashino.

It was short stories which chemical professor resolve the matter by his chemical knowledge.  Many of Keigo's novels were very interesting for me. But, I did't like it.

My lanking: ★★☆☆☆

Powerful head light

I bought high power head light for bicycle. The level was 400 lumen. I don't know how powerful the lumen was. But, old one which I'd used about 3 years was 200 lumen. So, new one must be higher than old one twice.
Some days later, I tried it in the night. It was very bright. It must be safety when I'll commute in the night.