The author is known by the domain name of Rupert and the man totally digs that brand name. Bookkeeping is his profession and it is something he really get pleasure. Years ago we moved to Montana. One of my favorite hobbies is to base jump but I haven't made money with the concept. He is running and maintaining a blog here: https://Bookiessite.com/zh-hans/%e4%ba%9a%e6%b4%b2/%e6%96%b0%e5%8a%a0%e5%9d%a1%e5%8d%9a%e5%bd%a9%e7%bd%91%e7%ab%99/