He conquered Iran & Iraq, Syria, kicked the turks ass & the Egyptians..
I dunno if Tamerlane ever had an army bigger than 100,000 but I think when he was planning the invasion China was not @ their peak yet.... (early 1400)
It is all really speculation of course but China was involved in conflicts w/ other Mongols as well as huge armies in the south-Vietnam etc..
I have just seen a few blogs of ppl discussing the invasion but nothing really compelling...
I think even if he was successful in part or whole, it would have all fallen apart upon his death.... (wish seems a story akin to Alexander)
Thanks for the historical factoids. Most of this is a Tamerlane stuff is a black hole in my knowlege.