This is the most fuckable quest on calpheon :
1) Take the quest from Black Spirit and go to falasi - https://bdocodex.com/jp/quest/3125/1/
2) when you finish all chain you will get LAST 3 QUESTS, ( something treasure , another shit and ancient ) . NOTE THAT YOU NEED TO TAKE LAST QUEST - SOMETHING ABOUT ANCIENT CIVILISATION BOTTON ON THE SEA ****
3) If you did it right, after the quest is done, it will a appear another quest chain from falasi - https://bdocodex.com/jp/quest/3128/1/
4) do the chain and get the knowledge
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IF YOU DONT HAVE THE KNOWLEDGE and you did it years ago Mysterious Request - the only option is to install a bookshelf like Handcrafted Serendia Ecology Bookshelf - BUT KEEP IN MIND THE CHANCE TO GET IT IS LIKE 0.000000000001% because of the total amount of ingame knowledge base

You can complete the following questline to get the knowledge:
https://bdocodex.com/jp/quest/3125/1/

After u did the above questline another quest will immediatly start and you need to finish that one.
You get the knowledge from the following quest:
https://bdocodex.com/jp/quest/3128/7/

+ Можно выполнить с Дайном Грез. Будут посылать туда-сюда с материка на острова.
Приготовтесь потратить много времени.

só fazer as quest no Falasi

Bu bilgiyi almak için Gizemli Çağrı görevini kara ruhtan almalısınız.Bu görev serisindeki Hikayelerle Dolu adlı görevi bitirdikten sonra Philaberto Falasi'den Uyuyan Kadim Uygarlık Hikayesinin Yönettiği Deniz görevini almalısınız.Bu Görev serini bitirdiğinizde "Onurlanma Zamanı" adlı bilgiyi elde edeceksiniz.

To obtain this information, you must take the Mysterious Request quest from the Black Spirit. After completing the Bag Full of Stories quest in this series, you should take the The Sea of the Ancient Civilization quest from Philaberto Falasi. Once you finish this quest series, you will obtain the "The Glorious Day" information.