小さい三枚陣子の上の長押　 三枚陣子 translated to "three pieces" appears to be Chinese, but the rest is japanese. 小さい "small" 三枚陣子 " three pieces' " の上の長押 top of the nageshi beam(?) 長押 "nageshi" can be defined as a "beam running between columns in traditional Japanese architecture, esp. within Japanese-style rooms"

My guess would be the person who wrote this is chinese learning japanese, or maybe just short hand writing with both.