Ancient Magic (Dear readers following along, could you give it a rating? I still haven't gotten a score yet, haha)

After spending two days on Mount Longhu, Su Yu had originally promised to accompany Cho Chang sightseeing for both days. Instead, he spent most of his time buried in the scripture repository.

He wanted to study the principles behind Mount Longhu's spells, and Cho Chang stayed with him for the entire day. Sometimes she dozed off at the table, sometimes she brought him tea, and sometimes she fought Kurama over snacks. She did not complain, though.

On the morning of the third day, Su Yu was meditating in the courtyard while Kurama lay atop the stone table basking in the sun. A clear cry suddenly rang out from the sky. He looked up and saw Qingluan emerge from the clouds, her wings gleaming blue-green in the sunlight. Qingluan landed on the courtyard wall with a letter tied to her claws.

Su Yu untied the letter and unfolded it. It was actually from Grindelwald, written in sharp strokes—"You have nothing better to do during the holidays. Meet me in Diagon Alley. I'll show you something real."

After reading it, Su Yu tucked the letter into his pocket. Kurama lifted her head from the stone table and asked, "Whose letter?"

"Grindelwald's," Su Yu said. "He wants me to go to Diagon Alley."

Kurama yawned. She was not interested.

Su Yu immediately packed his things and prepared to head down the mountain. His original plan to spend a month at East University was now scrapped.

Cho Chang saw him off at the entrance to the Taoist temple and handed him a bag of tea. She said it was from the Celestial Master, and that her father had liked drinking it in the past. Su Yu accepted it and thanked her.

"Make sure to write to me next time you come," Cho Chang said,