In a commercial company, Xiaohua, Guangzi and Longsheng held the positions of manager, vice chairman and accountant (but not necessarily in the above order); it is known that the vice-chairman is an only child and earns the least money; Longsheng and Photon The elder sister is married and earns more money than the manager. This shows:. ['Xiaohua is the manager and Photon is the vice-chairman.', 'Photon is the manager and Long Sheng is the vice-chairman.', 'Longsheng is an accountant and Xiaohua is a manager.', 'Xiaohua is the vice-chairman and Long Sheng is the accountant.']