It is the correct Christmas Eve.

I am continuing to upgrade the home security system now.

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Not to mention, once "home security system" get hijacked, it is over.

Apart from my house, after being asked to build another home's home security system, I become worried seriously about "cyber attack"

Well, I guess that I am different from other people -- the time that can be used to build such a system of hobbies is, quite fun for me.