修炼内丹的三个阶段：将精转化为气，将气转化为神，最终将神归于虚无。

Risk management in mining isn't about eliminating all risks - that's impossible - but about understanding and mitigating them intelligently.

我唱歌不是为了完美，我唱歌是为了活着。

我不知道极限在哪里，但我想去那里。