I am fascinated by 無情對,
It is two of my attempts:
四川特產北菇 (Sichuan specialty mushroom)
三洋通用東芝 (Sanyo, GM, Toshiba)
今朝書店晚開 (Bookstore open late today)
現代本田日產 (Hyundai, Honda, Nissan)
(All in Cantonese)
I think my matching of characters is acceptable, but not sure if they fit the 平仄 rule.
My question is as follows : What is the 平仄 rule in 無情對? Does my samples correctly followed this rule?