http://hkmdb.com/db/movies/view.mhtml?id=6370

陳汶和 is credited on the poster but the film credits say 陳文和 (presumably him: http://hkmdb.com/db/people/view.mhtml?id=15162) Any objections to merging them?
The second one is a bit trickier. 牛家雲, who isn't in the database and has no other credits I could find elsewhere, is credited for the lighting. This name is somewhat similar to 牛雲龍 (http://hkmdb.com/db/people/view.mhtml?id=14299) who has other lighting credits, including one on Seven Knights, which is the other movie produced by the Tai Yuan company. Alright to credit him based on this, or is it too speculative?

I agree on the first one - they can be merged. Do not merge the second one - evidence is insufficient at this point.

Done. There's nothing to merge regarding the second one since I didn't actually add the 牛家雲 name to the database.

Yeah feel free to add 牛家雲 and perhaps leave an editor's note of your speculation that can later be referenced if/when more evidence comes to light.