On the afternoon of 19, at the forum held by the "Chengdu science and technology house", a group of over half of the elderly drank tea together and shared a common topic -- invention.

Stealth barrier, induction art curtain, automatic fishing rod, coin counting machine with automatic sorting points.

Some common articles were fiddled with by these elderly people, and they really made great articles.

"These shoes are pformed by me and can be generated by moving around."

The 65 year old stone has won 7 patents.

He took off his shoes and showed them to reporters. There was a small circuit element around the sole, connected to a small lighting lamp, and a small pressure generator was installed under the insole.

"I pform the energy generated when people walk on a pressure generator, not only for lighting, but also for mobile phones."

Shi Lao said proudly.

According to introduction, Chengdu science and technology home has nearly 300 people, and has achieved more than 500 achievements.