"The practice won vigorous governmental support in many countries, regardless of the social system. But it has been on the decline in recent years."

He added that public art also improves an urban space's appearance by underlining the creator's personal views on beauty; but neither of these two types of public art conducts a deeper interaction with residents' daily life.

The Nine Walls project in Hangzhou has been considered a good example of how public art can connect the past and present of a city.Li Zhong / For China Daily

He said that a recent important trend in public art worldwide is to associate itself closely with the public's true needs. It's no longer a pure concept of fine arts that merely meets the tastes of a small elite, he said.

In China, public art is particularly a social issue more than a matter of aesthetics. "We don't lack money or creativity, although we need a sense of what public art means and more openness in the decision-making process," Yin said.

One criticism is that cities are producing extravagant yet identical works. Du Dakai, who heads the public art department under the China National Academy of Chinese Painting, said a main reason why many Chinese cities look so similar is due to a lack of respect for the distinct "ecology" of each one.

He said that this not only relates to a city's natural environment and geography, but also its history, fashion and customs, as well as the character of its people.

"Cities forge a distinct identity in this way, and this decides the direction they will take in terms of urban planning and development. Hence, public art should also adjust itself to a city's unique characteristics," he said.

"I believe an extraordinary work should be suited to one city specifically, sometimes even to certain characteristics of the city."

Visitors to a public art project entitled Nine Walls in Hangzhou, Zhejiang province, will find it a vivid example of how public art can connect the past and present of a city.

One of the controversial large statues in Beijing's Tiantongyuan residential area.Kuang Linhua /for China Daily

In 2010, Yang Qirui, head of the college of public art of the China Academy of Art, and his team built nine walls as part of the renovation of the Southern Song Dynasty (1127-1279) Imperial Street. They embedded each wall with used household appliances, such as bicycles, a staircase and kettles, which they collected from the street's former residents.

It took Yang around two years to conceive the works. He said each wall samples a section of the street's past life, and they tell stories about the ordinary people of this city. The walls have not only become a popular spot for taking photos, but also a popular way for former residents to take a trip down memory lane.

"Many things have been demolished before people even realize their value and take a closer look at them. We found and gathered these old objects, because we want to preserve the life pattern that matters to a lot of people," he said.

"Public art is above all about sharing one's personal joy with others."

Transparency is another problem that needs to be tackled. Ordinary residents find their voices are barely heard when it comes to the production and placement of public art, compared to those of local administrators and from business.

When a dozen large statues were placed in a park in Beijing's Tiantongyuan residential area five years ago, their naked appearance created a storm among residents. Some sensed a deep affection for life conveyed by these sculptures, while others considered them rather embarrassing and even vulgar.

Yu Qingcheng, a clay sculpture artist, created the works on the order of the compound's developer. He said he gave them exaggerated characteristics to underline the subject of love between parents and children.

Property management staff told reporters that they installed the sculptures upon the developer's request. They didn't ask the residents in advance, because it would be difficult to suit everyone's tastes.

Anyhow, what is a good art work to some people may offend others. Researchers of urban sculpture art suggest that public art should suit its surroundings, and the decision-making should involve ordinary residents, who are the primary beneficiary.

Yin the art professor said public art will become diversified in many aspects including investment channels, art forms and functions.

"Besides works at government-sponsored and commercial venues, there are projects that cater to a particular time, space and architecture. Not only artists and art students, but also local residents are involved in the creative process," he said.

He added that the expenses also come from various sources through government purchases, commercial bidding and funds raised by artists and residents. "In one word, public art will contribute to social equity and harmony, as long as it is based on people-oriented values."

Zhu from the Ministry of Culture said the first national public art exhibition is being planned. It will complement a government-sponsored visual art exhibition system, which now includes a national fine arts exhibition and the China Design Exhibition.

He said the exhibition will not only boost public art creation, but also discuss how to establish a transparent public art management mechanism.