For individuals born in 1984， the Year of the Rat， here's what the search results suggest about the three potential "坎 (kǎn)，" or obstacles， in their marriages:

Early Marriage Challenges: Those born in 1984 may marry early due to a strong desire for companionship. They seek supportive and understanding partners to build a warm and happy family with. However， their strong charm can lead to temptations and external interference， potentially causing marital problems or even divorce.

Midlife Marital Issues: At around 43 years old， those born in 1984 may face a second marriage. This could be because they prioritize their careers over their partners in their first marriage， leading to a breakup. They are independent， career-focused， and may neglect their partner's needs. Differing views on finances， with the Rat being perceived as unwilling to invest enough in family life， can also cause rifts.

慎重 (shèn zhòng) or cautiousness In a second marriage， individuals born in the year of the Rat are generally more cautious. They reflect on the experiences and lessons from their first marriage， seeking equality and mutual respect in their next relationship. They prioritize stability， longevity， and compatibility in character， values， and goals with their partner.