Carey’s original important summary of article 7:

A real missionary becomes in a sense a father to his people. If he feels all the anxiety and tender solicitude of a father, all that delight in their welfare and company that a father does in the midst of his children, they will feel all that freedom with, and confidence in him which he can desire.

He will be wholly unable to lead them on in a regular and happy manner, unless they can be induced to open their minds to him, and unless a sincere and mutual esteem subsist on both sides.

A modern paraphrase of that:
A true missionary becomes like a parent to their community. When the missionary feels genuine concern, care, and joy in their community’s wellbeing – just as a parent does for their children – people will respond with trust and openness.

The people the missionary works with must be helped to open up to him or her and be comfortable enough to share their thoughts honestly.
Without this mutual respect between the missionary and the newly birthed Christian community, the missionary cannot effectively guide or support the community’s growth.

The long-term aim of article 7:
As we deepen our commitment to the unreached people groups in China, we must not only go, send, pray, and give; we must also plant healthy churches and develop mature disciples who can lead these churches. Only then can the gospel continue to spread in places that are inaccessible to outsiders and even to near-culture Chinese Christians.

Will Rusher in ChinaSource