Thousands of timber planks, stones and bricks are being reassembled into a house with black tiles, high walls shaped like horse heads and refined wood and stone carvings.

But this is no game with Lego bricks. It is the construction of a house built in the ancient Huizhou style in Huangshan, Anhui province.

While renovation of ancient houses has been happening for years and continues, the construction of new houses in ancient styles has also become important, using old, reclaimed building materials as well as new components.

Both trends are growing, leading to an architectural revival.

Huangshan, in the historical Huizhou region, inspired this important branch of Chinese architecture. Many of these ancient buildings, with detailed carvings and decorations at first not apparent from their often simple exteriors, are considered to be of great cultural and economic value.

Pan Guodong, builder of the house mentioned above and head of Huangshan Huijiang Ancient Architecture Design Co Ltd, said this masterpiece residence has already been sold for an astonishing price of over 50 million yuan ($7.9 million).

"The construction of Huizhou-style houses has become a sound industry with complete upstream and downstream industry chains here in Huangshan. Rising local companies produce pseudo-classic Huizhou-style houses and sell them for commercial uses," Pan said.

"Many companies also ask experienced craftsmen to repair some components taken from abandoned Huizhou-style buildings that were torn down to use in new, modern houses, or to rebuild old Huizhou-style houses," he said.

Like Pan"s business, the city is injecting new life into the use of the centuries-old style through supporting development of the Huizhou-style architecture industry. The city government calls the sector one of its 14 strategically important industries over the next three to five years.

"Huizhou-style architecture is like a three-dimensional historical book written with brick, wood and stone. They are not only historical and cultural relics, but also treasures that can generate huge economic value," said Ling Yun, Party secretary of Huangshan.

Ling said potential business models include the restoration of ancient cultural relics and buildings, the integration of tourism with architecture and the revitalization of old villages through the protection and renewed utilization of their architecture.