A busy year has been past, but I still have quite more annual leave left. Just go for vacation. What should I do in the next week off? I am planning for reading on basic computer science field. Surfing on web I acciedently know about guy whose name is Yinwang, a typically software engineer and quite popular in China programmer community. I readed his blog articles and other information relating to him. Anyway he is a intrestring guy. it’s worthy to know about him.