Mark Okoth Obama Ndesandjo is Barack Obama's half-brother, son of Ruth Nidesand and Barack Obama Sr., born in the 1970's. He runs an Internet company called WorldNexus that advises Chinese corporations how best to reach international customers. Conflicting reports claim he was born in Kenya and America. Other repots say he is an American citizen. He graduated from Brown University, studied physics at Stanford University, received an MBA from Emory University, and after moving from Florida has lived in Shenzhen, China since 2002. He is married to Liu Xuehua (also spelled Liu Zue Hua in some reports), a Chinese woman from Henan Province. He is also an accomplished pianist. In November 2009, he held a press conference for the upcoming publication of his semi-autobiographical novel Nairobi to Shenzhen, and stated that he also planned to write a proper autobiography which would go into more detail about his relationship with Barack Obama.