三味真火，是家修行者独有的真火，无透明，不像平常的火焰那样有颜，若不是能够引起空气的些微波动，本就察觉不三味真火的存在。

在朱弦和许半生的中，这鼎炉当然还是清晰可见的，朱弦看得清楚，鼎炉已经发暗红的光芒，这是许半生用他炼制的三味真火在灼烧着鼎炉。

双手环抱，小小的鼎炉缓缓落在许半生的双手之间，随即滴溜溜的旋转起来，不一会儿便化作一黑黄的光芒，其旋转的速度快到平常人的几不可见的地步。

鼎炉的温度已经极，许半生却依旧在持续的为鼎炉加温。

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心念一动，空间戒指之中一颗补气丹，许半生一嘬，那补气丹便他的嘴里，瞬间化作涎，被许半生完全收，他的气又恢复到全满的程度。

在许半生的额之上，已经隐隐约约现了几滴汗，像是许半生这样寒暑不侵的，能够让他汗，可见其已经耗尽自的气。

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