I removed the translation note because Chiko was her original name. She changed her name to Tenshi after becoming a celestial.
Yes, but that's not that obvious. A note (or a comment like yours) would have been a welcome addition, since I (for example) wasn't aware of that until it was pointed out. Arguing about this now is moot, but I believe that just a small edit to the note would have sufficed.
I didn't know she changed her name either. But looking at it, it's obvious why: 地子 - "Earth child (girl)", 天子 - "Heaven child". I'm pretty sure the pun was intended...
For the "why", see my comment above. For the how, given the lack of records, she probably just started using Tenshi instead of Chiko.
Peoples change name more often back then. In feudal Japan, someone can choose their own name when they reached adulthood. There's also changing name after certain significant event, such as entering monkhood.
Not sure about in China though. Do they have such tradition too in the past ?
When the Hinanawis became celestials, their daughter Chiko Hinanawi followed them and became a celestial as well, even though she was a young girl.
Chiko renamed herself Tenshi when she moved to heaven. She was not satisfied with how she was treated there, and often looked down on Gensokyo with jealousy toward the humans and youkai living on the ground.
The Hinanawi clan, formerly known as Nawi, was a family of priests who protects their keystones to prevent earthquakes but was later appointed to also cause earthquakes around Gensokyo. They might've named her Chiko because of that, and you can see why she changed her name.
Also, she didn't become a Celestial on her own volition, and she sure isn't happy about it.
If you're interested in Tenshi's story, maybe you should go play Tenjou no Tempest by LION HEART. Its story fits perfectly as a prequel to Siirakannu's TENCO's STORY(not the one in Danbooru. The complete one). They make almost canon-worthy stories about her after the events in SRW.
Seika said:
Peoples change name more often back then. In feudal Japan, someone can choose their own name when they reached adulthood. There's also changing name after certain significant event, such as entering monkhood.
Not sure about in China though. Do they have such tradition too in the past ?
Well, my Chinese friends often have their own "public name" and "chinese name". I don't really know the details, but I think they got both since birth. As for me, other than family name, my family name has another name to distinguish it among the same family names.
Updated
Ch- Chiko...
Hinanawi Chiko.Hello!
My name is Alice.
What's your name?