Wang Yi recommended this documentary to everyone through his microphone, and "urged all people who have been parents, will be parents and do not plan to be parents, to download this piece from the American 'National Geographic Channel'."
I didn't read his article "The Smile in the Mother's Womb" carefully, but I quickly downloaded and watched this documentary. The documentary is indeed well-made, allowing us to clearly and truly understand where we come from and how we came to be. In this sense, this documentary is worth watching for everyone.