Capítulo 191: Chapter 188: The Hatch is Welded Shut!

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The so-called toothbrush and toothpaste were actually just a tender birch twig accompanied by some charcoal ash.

Birch sap is a pretty good refreshing drink and even has medicinal health benefits. Its branches have plenty of fibers that can totally be used as a toothbrush, and some of the older branches can even be made into arrow shafts.

Bi Fang chewed on a piece of the tender birch branch, then used the leftover fibers as a toothbrush and the water mixed with charcoal ash as toothpaste.

"The method of using charcoal ash for brushing teeth can't be used all the time, because it can damage the teeth. But remember to mix it with water before using, as the alkalinity of the charcoal ash is very strong and can easily burn the skin."