What does it mean to be as rare as a star and as precious as an arch?

Sparse: Sparse. As rare as the stars in the morning. Small quantity, extremely precious.

Ma Weidou talks about collection: as precious as the morning star and as precious as the arch wall-Ru kiln

Song porcelain has two systems, one is the official kiln system, which is the five famous kilns in Song Dynasty. There is also a folk kiln system, which is divided into eight kiln systems. Let's talk about the official kiln system in Song Dynasty, that is, the five famous kilns in Song Dynasty. This lecture only talks about Ru kilns.

We all know the five famous kilns in Song Dynasty: Ru kiln, Guan kiln, Ge kiln, Jun kiln and Ding kiln. I have heard this saying since I was a child. As the boss, Ruyao ranks first, "Ruyao is the first". There are many records about Ru kiln in history, and there are also many folk sayings about Ru kiln. Occasionally appear in today's TV series. For example, in a TV series I watched, an actor held a big blue and white bottle and said, "This is Ru kiln." What a joke!