What is the best way to render 胸怀 in 据说鲁肃这个人胸怀文韬武略...?
'胸' is metaphor for &quot;one's mind (brain)&quot;
[胸怀 (verb) mind contains= possess]
[文韬武略 (object) theoretical and practical military knowledge]

据说鲁肃这个人胸怀文韬武略
It was said that this man, Lu Su, possessed great military knowledge

胸怀 in other context can also mean 'have ~ within one's heart/ mind'
Example:

胸怀大志 (possess great ambition/ have great ambition within one's heart/ mind )