"My husband and his friend went into the market in 1994, and they persuaded me to join in. Now my whole family lives on it. I do quite well - all my husband's friends praise me."
Ms Lian, 36, spends most days at the broking house; other punters packed into the smoke-filled room had pointed her out as a successful investor.
This has been a nerve-testing month for China's 21 million stock-market investors; a jet-propelled bull run followed by a warning in the Communist mouthpiece, the People's Daily, that shares had reached "abnormal and irrational" levels. That sent prices into free-fall, burning the pockets of millions of new investors. The People's Daily seemed almost gleeful at the dramas. "Stock markets are extremely risky, but in the past few months not a few people forgot this point," said a front-page commentary after the government's warnings.
As a result of the commentary, the paper boasted, "many people have observed the market changes and seen many things revealed and gained an even deeper understanding of the market". The editorial did not take credit for the sharp drop in prices, however. The decline was due to a lack of buying interest, it said.
At Huaxia, government attempts to cool the speculation had not dimmed the enthusiasm this week, although prices collapsed by almost a third after the People's Daily article. Chen Guang, 28, a businessman, said: "Night and day I think about trading shares, much more than I think about my girlfriend. When I make a correct decision, the happiness I feel is unspeakable". In July he made a pounds 3,000 profit selling shares in the Shanghai- quoted Cheng Huang Miao commercial centre.
Mr Xu, 54, a retired truck driver, was playing for smaller stakes. "My pension is not high, so this is the only way to make extra money. So four of us retired old men put our money together and come here in turn. One of our group is very clever; he used to be a cadre in the trade ministry."
Mrs Cai said her 24-year-old son had given up his previous job. "At first he lost money, but now he can support himself from share-trading, and even buys things for me."
China started its stock market experiment in 1990, opening bourses in Shanghai and Shenzhen. This year investors have jumped from 12 million to 21 million, mostly concentrated in big cities. The Shanghai Securities News is printed at 25 sites and often sells its 300,000 copies by breakfast.
With the growing number of people this year chasing a limited number of shares, prices soared. By the time the government decided to cool the speculation, the Shenzhen market had more than quadrupled since the beginning of 1996, and Shanghai more than doubled.
Most of this year's nine million new investors had, until a few weeks ago, only experienced a rising market. Li Qian, spokeswoman for the Shanghai Stock Exchange, said: "Those newcomers are not so clear about the risk. At the beginning they only see profit-making by their neighbours, so they just rush into the market and put their savings in quite high-risk stocks."
The People's Daily article had been published, she said, just before prices "went mad".
Chinese investors have to buy local-currency-denominated "A" shares, while foreign investors buy foreign-currency-denominated "B" shares.
In November, the cheaper "B" share markets also rocketed - doubling in a month - as Chinese investors piled in, believing the authorities were turning a blind eye. The system had relaxed to the stage where flourishing a photocopy of a foreign passport or a Hong Kong ID document was enough to trade on a "B" share account in Shenzhen. The rules have now been tightened again.
China says it remains committed to the expansion of the stock markets. But market regulators have set a deadline of 1 January for China's brokerages to start doing more to teach their clients that markets have bears as well as bulls - just in case the past weeks have not pressed that message home.