Okay.
1. Skills. Chen Li has superb skills and powerful craftsmanship. She can carve such a small olive pit into a lifelike figure. Her skills are very powerful.
2. Mentality. The most indispensable thing when doing micro carvings such as nuclear carving is the mentality. Only by calming down the energy and carefully carving can you carve good works. And a superb craftsman like Chen Li has a calmer mentality, so it is better.