Collect your red creature photos for the Genshin Impact Five Flushes of Fortune event in Tianqiu Valley and Windrise.
Red, or at least red, creatures in Genshin Impact tend to be Pyro, but these enemies aren't the only life forms in the game that are red. There are red lizards all over Liyue, and those little “red” foxes in Liyue also count towards the Fortune Red Creature's five puffs. That said, before heading to Liyue, stop at Windrise in Mondstadt and head north up the hill towards a small Hilichurl camp. There are two Pyro Slimes and two Pryo Hilichurls there, giving you four easy shots.
Once you've knocked him out, head to the Tianqiu Valley in Liyue, near the Pyro Regisvine lair. This area is teeming with red lizards and foxes, as well as a Pyro Fatui sniper near the ruins, Pyro Hilichurls circling the hills, and Pyro Whopperflowers can be found near Regisvine's lair. Lizards can be difficult to photograph due to the tall grass, but you should find a fair amount along the roads in the Tianqiu Valley.
It shouldn't take you more than ten minutes to take your ten photos of Red Creature for the Five Flushes of Fortune event (it took me three). Once you've got all ten, be sure to head back to Liyue Port and check in with Ji Tong to collect your treasure trove of rewards, assuming you're able to. Don't forget to check your Genshin Impact friends list to see if any of your friends might use some of your duplicate photos: give a little to get a little, you know.