"Do what you do and love what you do" refers to an excellent professional quality. The famous aphorisms about "Do what you do and love what you do" include:

1. A soldier who doesn't want to be a general is not a good soldier? -quotations from Napoleon

2. I hope that your younger generation will be able to contribute their strength to the great cause of mankind faithfully and practically, just like candles illuminate people. ? -from Faraday

3. A drop of water will never dry up until it is put into the sea. A person can be most powerful only when he integrates himself with the collective cause. ? -lei feng, from quotations from lei feng

4. only after a long period of hard work in its development and long-term immersed in the task, can it achieve something. -from Hegel

5. People's thoughts are great. As long as they focus on a certain cause, they will certainly make amazing achievements. -Mark Twain, from Mark Twain's essay

Extended information:

"Do a line and love a line" describes that as long as you start to do a certain thing or a certain industry, you should love it and continue to do it. It is an attitude of doing things.

doing: this refers to "doing work" and "doing things".

one line: here refers to "one thing" and "one industry".

Love: It should mean trying to accept what you are doing.