>As there is no chi, toitoi is more important, and also outside of toitoi, in callable hands it's standard to keep pairs in ryankan+pair shapes, as seen below.
>1335789p3488s pon 555z
>In terms of acceptance, there is no difference between 1p, 3p, and 5p discards here. But as you can only call pon you should discard 1p or 5p and keep the pair.
>On the other hand, with pinfu or other uncallable hands the standard practice is to keep the ryankan and discard 3p.
>1335789p3478889s
>From this hand, the discard is 3p in both sanma and yonma.

>>527288728
Some chapters are just 2 pages, and I don't think they'll get much longer while we're still in part 1. This is still the basic stuff, hopefully parts 2 and 3 will have longer chapters.