Su Zhengxiong's acquisition of two hundred grams of Spirit Rhyme Tea was entirely a chance encounter; there was no special channel involved.
But thinking about it, that makes sense. Spirit Rhyme Tea, a top-quality tea leaf sold by the gram and worth over a hundred million, must have an astonishingly low production volume. Under such circumstances, even the eight great clans might not be able to obtain it. It was already a stroke of immense luck that a minor figure like Su Zhengxiong managed to get his hands on some. How could he possibly have a consistent channel to acquire this tea?
Besides, if such a channel really existed, Su Zhengxiong probably wouldn't have begrudged drinking it and wouldn't have ended up giving Chu Mo a bargain.