Jia Wei, industrial designer and founder of LKK Design, told the story of how his infant daughter's injury from hot water made him invent the 55°Cup, a best-selling vacuum cup that can raise or decrease the temperature of the water to 55 C with just a few shakes.

He continued to design more products for children, including a watch that can act like a phone, a digital application for pregnant women to share their experiences and robots that keep children company when their parents are away.

"Children can be our teachers and they are a source of happiness," Jia says.

Wu Wei, a product designer-turned-carpenter, uses all kinds of wood to craft furniture for children.

"These days, everything is available with a click of mouse. But handmade objects can help children to experience and connect with the surrounding world, both naturally and socially," Wu says.

Japanese designer Takaharu Tezuka's project Fuji Kindergarten has been circulating online in China through a TED talk.

The kindergarten, with a circular space, employs safety nets that allow children to climb trees and handrails through which children can swing their legs.

"Treat children as part of nature. Don't protect them too much. Sometimes they need a little trouble. That's how they learn to help each other. That's how society begins," he says.

The forum is held alongside Play Lab, an interactive exhibition of furniture and toys designed for kids. Organized by Swedish furniture brand Ikea, the exhibition is an extension of Ikea's Play Report, which explores children's behavior and play. The exhibition at 751D-Park runs through Oct 6.