Group 1 - The fourth set of Renminbi was issued during a period of rapid economic development in China, marking a transition from a planned economy to a market economy, and it carries significant cultural and historical value [1][3] - The one-jiao banknote features ethnic minority portraits, symbolizing national unity and cultural diversity, and its design reflects the printing technology and artistic style of its time [1][3] - The "One Jiao Hundred Banknote Gold Brick" is a unique presentation of 100 consecutive one-jiao notes, designed to enhance both aesthetic appeal and protection against damage [1][3] Group 2 - Collecting consecutive notes is popular in the market, as their value often exceeds the simple sum of individual notes due to their rarity and integrity [3] - The historical significance of the fourth set of Renminbi, especially as certain denominations are no longer in circulation, has increased its desirability among collectors [3][5] - The limited issuance of the "Hundred Banknote Gold Brick," with some editions limited to 20,000 sets, contributes to its perceived value in the collectibles market [5] Group 3 - The market for the fourth set of Renminbi, particularly the one-jiao gold brick, has seen growing interest from collectors and investors, driven by emotional recognition and market demand [5] - The investment potential of the one-jiao gold brick is influenced by factors such as condition, serial numbers, and market supply and demand dynamics [5] - The unique framing, cultural significance, and investment potential of the one-jiao gold brick position it as a notable item in the collectibles market, attracting collectors seeking to explore its stories and value [5]