The Christmas carol "Deck the Halls" blares over the speakers of the warehouse store as the toddler lunges for a plastic Santa. His mother grabs him by the seat of his pants and hauls him back.
It's a classic Christmas shopping moment in the unlikely setting of central China — though one that is becoming more common as Chinese, few of whom are Christians, adopt the holiday as a festive time to shop.
But for members of China's unofficial Christian congregations, this is a season of fear as communist authorities crack down on unauthorized worship, detaining activists and bulldozing churches.
"Everyone is scared now. This Christmas will be tougher than usual," said the organizer of an underground church in the eastern city of Hangzhou whose building was destroyed in October. The man spoke on condition of anonymity.
The contrast between the crackdown and the Christmas celebrations highlights Chinese authorities' desire to isolate religious dissenters while exploiting the holiday's commercial potential.
"The central policy of the Communist Party has never shied from good commercial opportunities," said Bob Fu, a U.S.-based monitor of the underground Chinese church.
"They can call it 'Christmas with Chinese characteristics,'" Fu said, borrowing the ruling party's language for China's interpretation of such Western concepts as socialism.
China's government allows worship only in government-monitored churches, temples and mosques. But tens of millions of believers belong to unauthorized churches, where clergy and members are frequently harassed and detained.
Official controls on religion stem from government unease that churches could act as a rallying point for opposition and threaten communist rule.
Christianity took root in China about 150 years ago, spread by missionaries accompanying European and American traders who set up colonial enclaves along its east coast. Communist leaders barred most religious activity following the 1949 revolution, ordering Chinese to cut ties with fellow believers abroad.
Today, about 15 million Protestants and 10 million Catholics worship in the official churches. Millions more are believed to belong to the unofficial or "house" churches.
The rise of Christmas — as a secular bright spot during the bleak Chinese winter — has paralleled the rise of capitalist-style economic reforms.
In Shanghai, the country's commercial capital, a 70-foot-high Christmas tree stands on a stretch of tony Nanjing West Road that is dotted with boutiques for Gucci, Versace and other designer brands.
In an echo of American tradition, several shopping centers are advertising visits by Santa Claus. Another promises a "red-nosed clown special holiday."
Such marketing has spread inland to Changsha, an industrial center along the Yangtze river, where Christmas carols are piped through the Trust Mart discount store and ribbons, wreaths and fake snow adorn doorways.
"It's a lively atmosphere. It makes people happy and helps with business," said shop assistant Wendy Huang, wearing a red-and-white Santa Claus hat and vest.
It's not clear how much the promotions are boosting sales. This year, the holiday comes just weeks before the Lunar New Year, the traditional Chinese season for gift-giving and banquets.
"Of course we've had more shoppers these days and sales have increased over the past few weeks," said Wang Yujun, promotions director at the Friendship Department Store in Shanghai's upmarket Hongqiao district, home to many foreigners. He declined to give figures, saying they were secret.
Secret too is how authorities wish to keep information about the crackdown on unregistered churches outside Hangzhou, about 90 miles southwest of Shanghai.
About a dozen churches have been destroyed here since the summer, along with scores of Buddhist temples and Taoist shrines, according to activists and human rights monitors.
Three church activists have been arrested on charges of revealing state secrets for talking about the crackdown, according to the Hong Kong-based Information Center for Human Rights and Democracy.
Such actions vary from place to place, with greater tolerance reported in the northeast and some other parts of China.
Yet selective enforcement of rules can intimidate unofficial congregations everywhere, the U.S. State Department said in its 2003 report on religious freedom in China, released last week.
China's "respect for freedom of religion and freedom of conscience remained poor, especially for many unregistered religious groups and spiritual movements," the report said.
China's Foreign Ministry responded Sunday, rejecting the criticism and accusing Washington of "interfering in China's internal affairs under the guise of religious issues."
At Shanghai's imposing Cathedral of St. Ignatius — part of the officially authorized Roman Catholic Church — such feuds and commercialism seem far away.
Parishioners follow the Chinese-language Mass on big screen televisions, and the only ornaments are in a nativity scene. Christmas Day services are so popular that the church distributes tickets to limit the number of worshippers.
"We don't pay any attention to the rest of those things," said Li Ting, a middle-aged parishioner. "We just want to carry out our religion and celebrate this special time of year."