Seasons 1-3 Part 1 have Cantonese audio, since Attack on Titan has only been dubbed in Cantonese up that point
Downloaded seasons 1-4 Part 1 from https://www.aliyundrive.com/s/UgMfjf1fMMw/folder/623dd3f7644dbf26c82f4ee0aa4d9fab3f97c57e
Season 4 part 2 downloaded from https://www.youtube.com/watch?v=D2yc3NGsF-4&list=PL12UaAf_xzfo43JEMZ73z3UaCsnbXjDcG&ab_channel=Muse木棉花-TW
Remuxed using Judas' encode: https://nyaa.si/view/1186645
Youtube downloads with matching subs all downloaded from Muse木棉花-TW (https://www.youtube.com/channel/UCgdwtyqBunlRb-i-7PnCssQ) using Softether Taiwan VPN
Episodes 51 and 55 were not available on youtube, so I used the audio from the aliyun source above