Now, my over 14-years old MacBook cannot use Chinese input so I have to finish my blog in English today...... I haven't upgraded my "little white" since it was almost crack down three years ago.  I didn't realize it was already an old lady at that time and it couldn't stand such pressure. So it refused to start and was stuck at the loading bar status, seemingly forever...... But I didn't give up easily, the lack of habit of backup didn't allow me to do so! I tried my best to do anything I could, basically searching all related solutions on internet by my phone, thank God I could still rely on my phone. Finally, my "little white" got her rebirth three days later, during which sleepless days I might lose some weight. And yesterday, I lost all my patience and clicked the mark on App Store to upgrade the system, thanks to my OCD (which already resisted for two years).  Fortunately, it used three hours to successfully upgrade and reboot again! And I checked the Blog editing web page, it worked OK. However, as now you can see,  there must be something wrong with my old MacBook. Anyway, I decide to fix it tomorrow because I have wasted too much time on opening this page and writing this BLOG!