In a business company, Xiao Hua, Guang Zi and Long Sheng hold the positions of manager, vice-chairman and accountant (but not necessarily in that order) 
It is known that the vice chairman is an only child and he earns the least money; Long Sheng married Photon's sister and earns more money than the manager
Guang Zi is the manager and Long Sheng is the vice-chairman.