About an hour passed.
Director Li looked somewhat dazed as he walked out of the villa.
Only after he got into the car parked outside and leaned back in the rear seat, watching the lush green trees drift past the window, did he suddenly sigh.
"I'm getting old."
Hearing this baffling remark, the driver at the wheel paused, then said with a smile,
"Not at all, Director. You're only in your early sixties. You're still young-you could work another twenty years, at least."
Director Li shook his head with a smile and sighed.
"You're the young ones. I'm not young anymore. A few words with you youngsters, and I practically can't catch my breath. Another twenty years? Ha, another five would probably give me heart disease. Spare me."
The driver inwardly broke into a cold sweat at those words and kept his hands on the wheel without replying.
He had the distinct feeling that his old boss had some strange misunderstanding of what counted as a young person.
Remembering that Director Li had just come out of Professor Lu's house, he could more or less guess what had happened. But it might involve confidential information, so he dared not ask and simply drove in silence.
Rather than continue chatting with his driver, Director Li took out his phone and dialed Director Lü's mobile number at the Energy Bureau.
"Hello? Lü, there's something I need to tell you. This business trip to Jinling has really paid off!"
"..."
In truth, expecting lithium-air batteries to completely replace lithium-sulfur batteries was still unrealistic. After all, the most reliable way currently available to provide sufficient pressure on one side of an oxygen-selective membrane was to keep it moving.
Cars were undoubtedly a very suitable application. In theory, the intake grille that supplied oxygen