Yalhu's tech blob and plus study.
只记录有关学习的，包括技能，英语，记忆等。
不记录个人信息，比如生活，感悟，读书，电影，游戏等。
2 subcategories sum 3 parts: tech,ins and aggregate.
tech(dpf/w3/sum): /index(home1) /categories /tags /archives
ins(ins): /home2 /archives2 categories/tags2
aggregate: /acategories /atags /aarchives home
extra link: /schedule,/prepared, /booklist,/resource, template
5 directotirs:priv,ins,dpf/w3/sum,
Pages:categories,tags,acategories,atags, about, test
Hexo Layout:index/archives,categories/tags,
categories of sum.
backup and post on issues.
not all of them.
README.md: TOC of Summary project posted on issues.
temporary-data.md: temporary data for remote and different client work.
template-simple: a simple template for md file.
schedule.md: todos.
booklist.md:
resource.md:
prepared.md: