3. 装裱规格 This is a vintage Japanese vertical hanging scroll ink wash painting of a hidden dragon amid swirling clouds, a classic auspicious motif symbolizing good fortune, prosperity and favorable weather. Titled "Soun Koyu", meaning white clouds summon rain. Soft gradient ink renders misty clouds, with a celestial dragon partially hidden in the haze; yellow pigment highlights the dragon’s eyes to create a vivid visual focal point, done in traditional Japanese literati painting style with Zen aesthetic. Vertical signature & seals: 1. Poetic inscription: Soun Koyu 2. Dated: Autumn of Bingyin year 3. Artist’s art name: Toun (Peach Cloud) 4. Red square name seal: Endō Yasunaga, the painter’s full legal name. Mounting: Original Japanese brocade mounting with light green patterned silk, paired with brown-gold decorative head fabric and wooden scroll rollers, well-preserved antique artwork for tea room or traditional Japanese interior decoration. Short Simple Version Antique Japanese ink dragon scroll "Clouds Summon Rain", painted by Endō Yasunaga (art name Toun). Zen-style ink wash with hidden dragon in mist, original green silk mounting, auspicious decorative hanging scroll.