程武 程武师长教师于2009年参加腾讯科技有限公司并承当副总裁一职， 肩负腾讯游戏的市场运作。

Personal Profile: Edward Cheng Edward Cheng has joined Tencent Technology in 2009 as the Vice President for Tencent Games.

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And fixed versus variable speaks to whether you give a reward on a fixed schedule, every fifth time, or variable, sometimes on the third time, sometimes on the seventh time, and so on.

固定与变化则是相对于,你是否根据固定时程给予奖励而言的，每五次就给予奖励，或者是变化的，有时候在第三次上给予奖励，有时候则在第七次上给予奖励。

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