C139 Birthday Present

"You really need to lighten up," Yang Zhiming said as he handed a stalk of rice to Hee Zhen. "I was going to tell you straight away anyway."

"This," he continued, "is the surprise I've been wanting to give you. It's also the venture you can announce at your birthday party."

He explained to Hee Zhen about the impressive growth of the rice but kept the underlying principles to himself