When I used to take Chinese classes, the teacher would mention some Russian celebrities and writers by their names, such as Tchaikovsky, Ostrovsky, etc. I was still young at the time and didn’t understand much about these things. I thought Russian names were very strange. The word “driver” was added at the end. I didn’t know how to write “ski” at first. I always thought it was the driver driving the car. Then I thought it was Russian. He was a driver for many famous people, and he made a lot of jokes at that time.
As I grew older, I gained some understanding of this. In fact, the word "ski" is added after it, which expresses a kind of status, which is unique to the aristocrats of the Tsarist Russia era. But later, with the change of dynasties, the original nobles changed the unique structures of the later nobles in order to avoid getting into trouble.
As for the great writers of the 19th century, most of them were born into nobles, so most of their surnames ended with "Ski". Then most of them are called by their surnames, which can better show their noble origins and highlight their identities.
As we all know Tchaikovsky, his full name is actually Pyotr Ilyich Tchaikovsky, and we usually only say his last name. After the October Revolution, the original nobles declined. Then some common people in Russia, those serfs, could have their own surnames, so after that, few people came to add "ski" to their names. Well, most of the nobles of Tsarist Russia fled or were killed after Russia entered the Soviet Union. But no one dared to show their former noble status, so no one used the suffix "Ski" anymore.