Lecture 10 What is topological order -- a view from topological excitations

8边型到Genus-2曲面的动画： https://www.bilibili.com/video/BV1Cv1SYwE74/?spm_id_from=333.337.search-card.all.click&vd_source=b4562977b36ed3ee8f128ad2c6b381d3