Group 1 - The article discusses the unfortunate experience of a woman named Wu who faced significant financial losses due to a real estate transaction in Shanghai, highlighting the importance of understanding contract terms and legal implications [2][29] - Wu paid a total of 745 million yuan as a down payment for a property but ended up owing an additional 490 million yuan due to contractual penalties and losses after failing to meet payment deadlines [14][26] - The case emphasizes the necessity of involving legal professionals in high-value transactions to mitigate risks associated with contractual obligations [30][34] Group 2 - The article outlines the steps taken by Wu to secure a property, including negotiating payment terms with the seller and the involvement of a real estate agent [4][7] - Wu's financial difficulties arose from her company's cash flow issues, which delayed her ability to complete the payment for the property [11][22] - The seller, Mr. Fan, implemented strict penalties in the contract to protect his interests, which ultimately led to Wu's financial downfall when she could not fulfill her payment obligations [12][25]