2 sentences for 血脉 (xuè​mài — blood vessel)

1. 魔法是宇宙之血脉！

   mó​fǎ shì yǔ​zhòu zhī xuè​mài!

   Magic is the bloodstream of the universe!

   Source: OpenSubtitles

2. 保持血脉通畅对身体健康至关重要。

   bǎo​chí xuè​mài tōng​chàng duì shēn​tǐ jiàn​kāng zhì​guān​zhòng​yào.

   Keeping blood circulation smooth is vital for health.

   Source: Dong Chinese Dictionary