This video discusses the vaccine for hepatitis B.
This video explains why a honeybee dies after stinging someone.
This video explains why we shouldn't eat fruit that has gone bad.
This video explains why picking our noses not only doesn't look nice, but can also be harmful to our health.
This video explains the different circumstances under which hair might fall out.
This video explains how giraffes evolved to have the long necks they have today.
The giraffe's long neck serves many interesting functions.
This video explains why fresh vegetables are important to the body's overall health.
This video explains why a fish's body is covered in mucus.
How do two people break up on good terms?
What's the best way to get past the hurt and move on with your life after a breakup?
How and when did Christianity enter China?
This video details the history of Christianity in China, namely the influential figures, Matteo Ricci and Xu Guangqi.
Emperor Kangxi played a major role in introducing Christianity into China.
Where does the term "Tui Qiao" (literally to "Push and knock") come from?
By chance, Jia Dao meets a scholar who convinces him to aspire to a bureaucratic position.
Jia Dao's tragic life was revered after his death.
Does cashmere come from sheep or goats?
A long time ago, a maid named Hua worked for a very stingy couple. Then one day, a beggar arrived at their door...
Hua and the old beggar cross paths once again.