how time flies ，3 months has passed; I got more money from my friends, set more rigs; right now I have 20 rigs,but only 2 are running in my house ; others are not on because of two problems : things

Hi there! I am a engineer living in china; my English is not very good especially in writing;but I have decided to do this,and wrote it down,hoping this could improve my writing skills,and if my work could