Please answer the following question: What key details about touman can be extracted from the following bio? Bio: touman -lrb- turkish and mongolian : tumen , whom we know about from han-dynasty histories , which based themselves on documents contemporary with him and write the name as chinese , this spelling touman coming from the characters ' modern-standard mandarin pronunciation -rrb- -- was the earliest known xiongnu chanyu -lrb- -rrb- , reigning from c. 220 to 209 bce . the name touman is likely related to a word meaning ' 10,000 , a myriad ' , which was widely borrowed between language-families in , most plausibly , the order indicated by the following representative list of its forms : modern persian -lrb- which includes the tajik and dari dialects of it -rrb- '' toman '' ~ '' tuman '' , mongolian '' tumen '' , old turkic '' tuman '' , east tocharian '' tmam '' , west tocharian '' t -lrb- u -rrb- mane '' , which possibly even includes old chinese and later , whose pronunciation is reconstructable as for instance an early middle chinese * '' muan '' . note however that our only certain evidence this number-word already existed around and before touman 's life-time would be the chinese -lrb- if it indeed does belong on the list , rather than being an unrelated , similar-looking word -rrb- ; not until many centuries after he lived are the other languages with this word in them first attested . the city of tumen in south west siberia is named after him . by the time the qin dynasty conquered the other six states and began its reign over a unified china in 221 bce , the nomadic xiongnu had grown into a powerful invading force in the north and started expanding both east and west . at the time the donghu -lrb- -rrb- or ' eastern barbarians ' were very powerful and the yuezhi flourishing . emperor qin shi huang , the first emperor of the qin dynasty , sent a 100,000-strong army headed by general meng tian to drive the xiongnu northward for 1,000 '' li '' -lrb- about 416 km -rrb- . '' touman , unable to hold out against the qin forces , had withdrawn to the far north , where he held out for over ten years ....
A:
- title is chanyu- caption is domain and influence of the xiongnu january 2010 .- reign is c. 220 -- 209 bce- successor is modu- name is teoman- image is hsiung-nu-empire . png