1. Calligrapher's fame and position: Yuan Cunjian's fame and position in calligraphy directly determines the value of his works. If he has a high reputation and influence in calligraphy, then his works may have higher collection value.
2. Quality of calligraphy works: The quality of calligraphy works includes handwriting clarity, ink color stability, layout and composition. If Yuan Cunjian's calligraphy works are excellent in these aspects, they may have higher collection value.
3. Rare works: If Yuan Cunjian's calligraphy works are rare, or the works of a certain period are particularly precious, then their collection value will be higher.
4. Market supply and demand: The supply and demand of the collection market will also affect the collection value of Yuan Cunjian's calligraphy works. If the market demand is high and the supply is low, the price of the work may rise.
Generally speaking, the collection value of Yuan Cunjian's calligraphy depends on the comprehensive evaluation of many factors. If there is an opportunity, it is best to consult some professional art consultants or appraisers to get more accurate advice. At the same time, collectors should be rational, not blindly follow the trend, understand the market dynamics and invest cautiously.