Recently I bought this pot from Tang Zhaoxia at World Tea Expo. It's an apprentice's pot, for which she said a student must study with her an average of 5-8 years before she'll put her seal on the pot; they must recreate a variety of classic, as well as her own design, Yixing pots for years under her tutelage. This pot is pitch perfect, high-fire and tings bright and loud, resonantly. It is is 180ml.
I asked Tang Laoshi which pots (茶壺） she prefers best, simple or ornate. She said she prefers simple （簡單）teapot forms for their beauty and for the fact that they are harder to make: everything, she said, must be precise and any flaws in workmanship will immediately show on a simple and clean form that lacks ornate designs that distract from flaws in workmanship.
The pot pours well and fast with no leaks from the top lid; it has good balance in the hand and a wide lid/opening for ease of cleaning the pot. She recommended it for Gao Shan Wulong teas, which is what I primarily pour. I have yet to season it or pour tea in it. I've only water tested it.
She is a very cordial, warm, and friendly woman without any hint of arrogance for a woman whose pots can sell for $20,000 U.S. dollars or more. She laughs easy and is very open and humble.
Here's a movie link of her working with Yixing:http://yixing-teapot.com/blog/yixing-po ... ao-zhiyuan