YOU SAID:

One moment, Meng and I were talking.

INTO JAPANESE

ある時、孟嘗君と私は話をしていた。

BACK INTO ENGLISH

At one point, Meng Jiaojun and I were talking.

INTO JAPANESE

ある時、孟嘉之と私が話していた。

BACK INTO ENGLISH

At one point, Meng Jiazhi and I were talking.

INTO JAPANESE

ある時、孟嘉志と私は話していた。

BACK INTO ENGLISH

At one point, Meng Jiazhi and I were talking.