C536 Cold-proof Apparatus

These were the details of life. Even though it wasn't a big deal, it was still a big deal when one thought about it seriously. That's right. In such a cold day, if there was no heating, it would be difficult even for the Imperial Palace.

Such a small detail wouldn't be mentioned in the proper history books, so Shi Jiangyuan obviously hadn't read this paragraph.

When Kang Ying heard him say this