What is the relationship between Kudou Shinichi's father and Heiye Haidong's father?

They are friends and rivals, similar to KID and Conan now.

As for the seven martial arts, I don't know much about them. In Chinese calligraphy, it is probably:

1, yes

2. Number

3. Number

Step 4: no

5. Not necessarily

6. This possibility can be ignored, and the same person is still possible.

The sequel is relative to the finished animation, but Conan hasn't finished it yet, let alone the sequel.

There is no sequel

There is no sequel

There is no sequel

Conan will probably have innovation in the future. Conan has been innovating, but it is only a matter of speed.