Ying Wah College / Church of Christ in China, Bute Street [1928-1994]
The new building is listed under "Works Completed" in the PWD's Annual Report for 1928:
School—“Ying Wah College”—on K.I.L. 1784, Bute Street and Sai Yeung Choi Street, Mong Kok Tsui.
The history page on the school's website says the school moved to new premises on Oxford Road in 1963: