This was the disaster happened few days later when I switched my internet plan. In Australia, metered internet plans are common even for home internet with nbn. Therefore, check your Windows update setting before you connect your laptop to internet.
2015年微軟強制Windows 7 和 8 的使用者更新 Windows 10 的時候，曾經因為強制下載及強制更新發生過一些災情：
In 2015, there were some damages about Windows 7 and 8 users were updated to Windows 10 unexpectedly:
日本漫畫家在工作時電腦自動升級Win10，未存檔原稿消失。
A Japanese manga artist lost his work during windows update.
非洲使用衛星網路的動物保護組織因為自動更新消耗6Gb的流量，需支付龐大的連線費用。
An African animal protection organization pay a huge amount of money for 6Gb satellite internet because of Windows update.
當時看到以 Mb 計費的流量時還沒有遇過那樣的狀況，因為台灣的固網方案不論選怎麼樣的速度，都是無限流量。因此我一直沒有特別注意到自動更新消耗流量的狀況。
When I read the article about metered internet by Mb, I hadn't have this experience. Home internet plan in Taiwan are all unlimited with different speed. I never worried about the data consumption for windows update.
上星期在兩個不同網路的交接時期，因為新網路的系統問題，當中有一天多的時間我需要使用手機門號裡的網路，因為Optus七月的系統更新出錯，所以手機門號裡還有10Gb的網路可用，以之前的網路使用狀況來看，一整天的用量 (含網路語音通話) 大約是 1-2Gb 之間，因此，在等待新網路的期間，我也很安心地把手機網路接到電腦上，當時沒有開始語音通話，一如往常地瀏覽網頁。
Last week when I switched to a new internet plan, the new plan was under their system renewal that my new SIM could not be activated for 2 days. In those 2 days, I used the 10Gb data I got from the mistake in Optus' system update in July. My average data usage per day including internet voice chat was around 1-2 Gb. When I connected my laptop to my mobile internet, I surfed on the internet as usual without opening my internet chat.
手機上一直都有設定行動網路的流量警告，在分享網路給電腦之前，行動網路的使用量約是700-800Mb，分享沒多久之後，手機跳出了超過1Gb的警告，當下沒有想太多，只想到可能是電腦開網頁的時候使用了比較多的流量，設定好2Gb的警告之後，預期應該可以一直用到晚上了吧。
I used to set up the monthly data usage monitor for my mobile internet at 1Gb. Before I shared the internet to my laptop, the usage for August was around 700-800 Mb. I got the warning of 1Gb shortly after I shared the internet. I thought it might be the browser demanded more data. I set up a 2Gb warning and I thought it would be enough for the day.
結果一個小時候，手機就跳出了超過2Gb的警告，等於是在一個小時之內電腦就用掉了超過1Gb，而且還在持續增加中，這時我發現有點不太對勁，開始用Windows 10 內建的流量監控看看到底是什麼程式在短時間內用掉了相當於原本兩天的流量，結果是：
One hour later, I got the 2Gb warning, which meant the laptop consumed 1Gb within a hour and it was still increasing. I started to realize there was something wrong and I checked the data usage in Windows 10:
這時我想起了幾年前那個被強迫用衛星網路下載Windows 10 更新的非洲電腦，開始研究怎麼關掉Windows 10 的自動更新。
At this moment, it brought back the memory of that African animal protection organization. I started to check how to turn off the automatic Windows updates.
(Because of the large amount of pictures, I put the English part at the end of Chinese version together.)
若是 Windows 10電腦但是使用的是流量有限的wifi網路的話，以下的設定可以讓電腦不使用計量付費的網路在背景下載更新：
a. 設定使用中的網路為計量付費網路：
b. 設定自動更新，點進 "更新與安全性"：
在這個視窗裡還有 "傳遞最佳化" 要設定：
對於網路流量需要精打細算的話，記得看一下Windows 10是不是不知不覺已經吃掉你的流量了。
You can set up your Windows 10 not to download updates with metered internet with these steps:
a. Set the internet connection as metered internet:
b. Set the Windows update. Select "Windows update":
If you are on a metered internet and are confused about the data usage, check the setting for Windows update: this might be the reason.
