Chinese toilet paper, Hitler and 30 mins

Chinese invented toilet paper in 2nd century BC. By 6th century AD, toilet paper was used with inscribed quotations/commentaries of Confucian classics.

Average life expectancy in China was then 28. Considering it takes about 384 trees to make toilet paper that man uses in a lifetime (average 67), it gives about 5.5 trees/year for one man and at least (low-efficiency production in ancient China) 154 trees for an ancient Chinese.

Not only Chinese had fun. During WW2, humor and patriotism were inseparable. Check Hitler’s depictions on WW2 toilet papers. Yet another creative strain of Allies?

Since 2010, things got more economic.  30mins + 40-A4-sheets = one toilet paper roll.

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