From September 4 to 5, 2018, Indochinese Pastors' Seminar was held for approximately a hundred pastors from Thailand, Myanmar, Laos, and Vietnam in Mae Sai Church (Pastor Kun Jaeyot) in the Mae Sai district near the border between Thailand and Myanmar.

Pastor Jaewon Lee (Chiang Rai Manmin Church) preached under the titles of "God's Human Cultivation," "The Reason God Placed the Tree of the Knowledge of Good and Evil," and "Why Is Jesus Our Only Savior?" The sermons were based on Senior Pastor Dr. Jaerock Lee's sermon series "The Message of the Cross" and "Spirit, Soul, and Body". The attendants expressed their gratitude to Dr. Lee who had explained the providence of the cross and the love of God through the clear interpretation of the Bible in the Holy Spirit's inspiration.

The pastors in attendance realized God's amazing providence and mystery in His creation and human cultivation, and the spiritual meanings in the providence of the cross. They were also united in the Holy Spirit through testimonies, praises, and prayer meetings.