Mu worked with other volunteers to carry steel joists, reinforcement bars and bags of cement for the project in rural Hebei.
The experience provided a valuable lesson in how to turn abstract ideas into brick-and-mortar buildings. He realized the beauty of working the soil for the foundation and turning architectural drawings into something, well, concrete.
"It suddenly dawned on me what architecture is and what architecture I want to do," Mu says.
After graduation, Mu went to work at architectural firms in Spain and Norway to enhance his talent and to gain valuable experience in cultures different from his own. The European experience gave him a taste of nature.
He enjoyed living in a wood cabin, nestled by the sea, in Norway. "Seagulls flapped around before my window, waking me up every morning."
He also got insights into human interaction with nature from an unlikely source.
"All Norwegian kindergartens, even in the depths of winter, have their lunch break outdoors," Mu says. "They value the formative powers of the natural environment, and do not fear the cold or heat."
He was particularly impressed by how children under 5 years of age would sleep next to one another in the fields in freezing weather. He also admired how the children were taken on long hikes in the forest and learned how to set up tents, light fires and make furniture out of branches. It also reminded him of the beauty of his own childhood, when he enjoyed hunting with his father and diving into the sea.
He returned to China in 2010 and was determined that nature would play a role in his career.
In 2013, Mu launched his first project at Wuhan's Tangxun Lake, where more than 30 families have since established homes.
Mu drew sketches, made models and discussed possible plans with them, and then called up parents to actually help construct the homes.
Children got to learn about architecture while giving free rein to their imagination in the process, and parents realized the benefits of hard labor, Mu says.
"We found more parents, especially fathers who wanted to get involved and bond with their children."
Mu launched similar programs over the years. He showed people how to build houses with ropes in forests near Wuhan and held art camps for children during a Sino-French architectural festival.
Mu's activities have attracted increasing attention and admiration and he then got the opportunity to build a theme park, Wiki Tribe, with Sunac China and other institutions. The purpose of the project in Zhejiang province's Huzhou is to allow children and parents from the city and countryside to design and build public buildings.
Mu believes his appreciation of the benefits of nature is making inroads.
"Nature is a very important destination for us, so it should be an integral part of architecture," Mu adds.
He says he hopes his practice can help return architecture from machines to everyone's own bare hands again.
