According to historical records and research by modern experts, the golden threads of golden nanmu are generally formed after the tree is 30-50 years old, growing at a rate of 1-2 per year, and it takes a hundred years to reach "full gold" The above is why there is a saying that golden nanmu can become useful within a hundred years.

There is a scientific research and breeding base for golden nanmu seedlings in Zhejiang, which has cultivated a magical golden nanmu subspecies "Shenxian Nan". The most special thing about "Fairy Phoebe" is the rapid production of gold threads. The tree species begins to grow gold threads in the 2nd to 3rd year. The gold thread content in the fifth year can reach about 20, and it can reach "full gold" in 20 years. "When finished, the diameter can reach 30-40 centimeters.