Guan Tongwen (transliteration)
Joint learning college (free translation)
Recommend the latter
Tongwen Pavilion is actually the foreign language talent school of the Qing government (later) and the government translation bureau.
This understanding can also be combined with transliteration and free translation.
Wentong Foreign Language College/School (optional)&; The Royal/Central Translation Bureau in Beijing in the middle and late Qing Dynasty (the whole middle and late Qing Dynasty)
As for the royal family and the central government, you can choose.