那我便继续做下去
“I will continue to do it.”
THE DIALOGUE REEL
既然七祖母和景东叔如此信任我
“Since Seventh Grandmother and Uncle Jingdong trust me so much,”
那我便 继续做下去
“I will continue to do it.”
这全天下呀 除了我娘以外 也就七祖母和大伯娘
“In this whole world, besides my mother, only you and Seventh Grandmother”
Direct spoken expression in this communicative setting.
In Chinese family ethics, when respected elders bestow trust upon a younger member, the younger person is culturally expected to reciprocate with unwavering dedication and action.
LEARNING CHUNKS & PARTICLES
then I will / in that case, I shall
'Bian' is a slightly literary or formal equivalent of 'jiu' (then). It sounds poised, decisive, and is common in historical dramas or formal pledges.
to keep on doing / to carry on with a task
Adding 'xiaqu' after a verb indicates the continuation of an action from the present into the future, especially despite potential difficulties.