Recently, I planned a trip to Tianjin hoping to see the changes after a decade. I thought to myself that I would take the opportunity to visit my old friends there, a couple of retired doctors.

I told them: "I will arrive around 12:00 pm, spend the day with you, and stay overnight. The next morning, I will leave your home on my own." This was absolutely clear.

My plan was to visit Tianjin by myself, gather information and pictures aimed at writing an article, and return to Beijing by the fast train in only 28 minutes.