The "Yi Wu Da Shu" (Yiwu Big Tree) Cake from the 2008 ChenShengHao series is made from big tree tea leaves sourced from the Yi Wu tea mountain, known for its softness, sweetness, and potential for aging. Here are the key points:

• Selected high-quality tea leaves with great appearance are used.
• The tea threads are long, tight, and neat, with multi tea hairs.
• The liquor has a clear color with brightness.
• It offers a refreshing taste with sweetness and richness.
• Huigan (returning sweetness) occurs soon after consumption, along with a good amount of saliva production.
• It provides a soft and resilient mouthfeel.
• The tea flavor lingers on the palate.
• High-quality Yiwu tea brings more Cha Qi (inner energy) after evolution compared to younger tea.
• The tea undergoes Guangzhou natural storage.
• To ensure quality, ChenShengHao has contracted tea plantations at Yi Wu mountain, purchasing fresh tea leaves from local farmers and processing them in their own factory.
• Along with teas from other regions like "Lao Ban Zhang," "Na Ka," and "Nan Nuo / Ban Po Zhai," the Yi Wu series forms one of the four main pillars of ChenShengHao's lineup, each using tea leaves exclusively from its respective area.

This description highlights the unique characteristics and quality assurance measures of the Yi Wu series within the ChenShengHao brand.