Hi all, being a navy freak, I would have to give my vote to Admiral Zheng He (1371-1433), without doubt the greatest explorer in Chinese history. :china:
Zheng He was a muslim eunach who served under Emperor Zhu Di (Yongle), third Emperor of the Ming Dynasty. The great Admiral made a total of 7 lengendary voyages of discovery from 1405 - 1433 that saw trade and chinese influence spread to South East asia(as far south as modern day Sumatra, Indonesia), to Arabia(including the Red Sea up to Egypt) & to the east coast of Africa(as far south as the Mozmbique Channel).
What I admire most about Admiral Zheng He was his courage, navigational & logistical skills in keeping his massive treasure fleets (average over 300 ships and 30 000 men!!! including soldiers, merchants, embassadors, translators, astronomists, botanists and of course prostitutes) operational over vasts unknown, uncharted distances for years at a time. He explored, he traded, he conquered! (sounds like an advert for Civ 4 or somethin...)
How different would the world be if we did not burn all his maps and his ships when he returned?! we could have ruled South East Asia, Australia and Africa 500 yrs ago, as it is we wouldn't have a blue water navy again for another 600 yrs!!!
P.S. Have any of you read 1421 - The year China Discovered America by Gavin Menzies? although I don't agree with its findings that the Admiral reached America, its still an interesting read and he does raise some good points. For a more historical look at the great Ming fleets see Louise Levathes' "When China Ruled the Seas: The Treasure Fleet of the Dragon Throne, 1405-1433"