Transferring knowledge to other people in different languages is difficult because of gaps in languages and cultures. It makes the knowledge transfer more difficult when the recipient is young, because the comprehension and language ability of the young are incomplete. To better understand and design language services, this chapter introduces a communication protocol that meets requirements of agriculture support in rural areas, and fully delineates the communication environment by elucidating the field issues comprehensively; solutions are considered. The field experiment conducted involves agriculture support in Vietnam. In the context of agriculture support in rural areas, there exist several issues such as the requirement of timely knowledge transfer with high translation quality, and multilingual communication between youths and experts where gaps in language ability and expertise should be considered and addressed.