My son can transplant rice seedlings.

I am proficient in piano, chess, painting and calligraphy. My son can grow seedlings. The next sentence can be said that he is proficient in piano, chess, calligraphy and painting, and can play a coherent role. "My son can grow rice seedlings" means that my son can grow rice seedlings, highlighting his skills. "Proficient in piano, chess, calligraphy and painting" is also a compliment to his son, saying that he is proficient in everything.