What are the receptions of Olivet Assembly in these countries?

What are the receptions and reputations of Olivet Assembly in these countries? - US - South Korea - China (Is it also called Young Disciples of Jesus (耶稣青年会)?) From limited search results, it looks like it was founded in South Korea. There are also some articles about it on American and Chinese websites, with different attitudes. Is it legal and well accepted by the governments or societies in the three countries? Thanks.