One fine day, Zhao Tianci, 29, decided to give up his job. “My mother has had ALS (渐冻症) for eight years so far,” said Zhao. “Because of great work pressure, there was very little time I could spend with her.” He thought it was time to change it. He decided to take his mom on a trip to Xinjiang.

On June 11, Zhao and his mother set off from Shangqiu, Henan. During the journey, Zhao kept driving and sometimes pushed his mother’s wheelchair through the attractions (景点)along the way. He also shared videos of their trip online.

Zhao invited a friend to go with them and also hired (雇佣) a nursing worker to help during the journey, because his mother had difficulty speaking, eating and using the restroom. Sometimes they had to drive for 10 hours a day and even have their meals in the car.

The 15,000-kilometer journey ended on July 12. Zhao said new life had begun and that they would like to visit Xinjiang again in his last video. Zhao’s mother liked his videos. “Most of the time she just wanted to make sure she looked pretty,” Zhao said and smiled.

The videos caught the attention of many people. Some people who have ALS patients at home asked Zhao for advice on traveling in Xinjiang. Zhao said he wanted to tell ALS patients that there was no reason for them to just stay at home, and that they must make the most use of every day to enjoy life.

They’ve been extinct (灭绝) for more than 65 million years. They left no pictures but libraries were filled with books about them. Yet, they live on in the imaginations of people. Mention the word “dinosaur” to anyone and you’re sure to have something to talk about.

We have known about these strange living things for more than 200 years. Their fossil (化石) record was first discovered in 1818. The word “dinosaur” was created in 1842 by a scientist who put two Greek words together.

What we know about dinosaurs comes only through the fossil record they left behind. We can get an idea of how they looked by building their skeletons (骨架) with fossilized bones and teeth. They must have been amazing as they towered high above the other living things of their time. We do know that they lived on land and walked. Some walked on two legs. Others preferred four legs. Some were fast and others were quite slow.

We have a pretty good picture of their size and structure, but not much else is known for certain. For example, what color were they? Nobody knows. Did they cry like lions, or were their voices sweet and musical like birds? Again, how can we know? The fossil record does not speak.

Keep in mind that what we don’t know about dinosaurs is far greater than what we do know about them. As with a lot of researches about that era, scientists often have to read between the lines.

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