Pearl mussel disease because it went through a painful process, become famous businessman also experienced a bumpy.

蚌病成珠是因为它经历了一个痛苦的过程，商人成名也历经了坎坷。

youdao

Since that area provides 70% of Japan's mother-oysters, which are raised to accept the pearl seeds, the mystery disease rapidly spread to other pearl-cultivating sites.

CNN: ASIANOW - TIME Asia

But beneath the luster lurks a mysterious disease that has been killing off oysters in Japan's main pearl farms for the past few years.

CNN: ASIANOW - TIME Asia