Updated on July 30:
To launch steemd in miner mode, please execute below command:
要将 steemd 运行在挖矿模式，将执行下列命令：

/root/steemd/steemd —miner='["accountname","${WIFPRIVATEKEY}"]' —witness='"accountname"' —seed-node="52.38.66.234:2001" —mining-threads=21x

Note / 注意:

• accountname: Your steemit username。 这里填你的 steemit 用户名
• WIFPRIVATEKEY: Your Active Key in steemit wallet. You can get it by clicking Wallet -> Permissions. 你在 steemit 钱包里的 Active Key. 可以通过访问页面 Wallet -> Permissions 获取。