1, things are rare and precious (wù y ǐ x and wé igui) means that things are precious because they are rare and beneficial. In economics, scarcity does not mean that the quantity of goods is scarce, but that supply is less than demand, and scarcity with demand is valuable. It is also ironic that people in modern society always know how to cherish it after losing it.
2. Source: Jin's "Bao Puzi Ming Ben": "However, less things are expensive, and more things are cheap." Tang Bai Juyi's poem "When I was young, I liked to talk about the full moon of my grandchildren and girls": "Things are rare, and love is more kind because of old age."