Some close friends are still inquiring Dogecoin miners. Below are our basic opinions.

1. Recently the coin prices generally goes down, but seemed like running up and down, not yet crashed. However, ICI's opinion remains the same, if you buy a miner that may need 300+ days to recover your capital, the only way you can protect yourself is to keep mining for at least 2~3 years, and hold the coin till then. 
2. The miners' prices in China's open market remains much the same as 1 month ago, so not yet a good time to buy.