On the afternoon of 26 December 2025, Li Jianchun—partner of ChungRui Tax Group's GuiZhou Office was invited to deliver the VAT Law study session for finance and tax  core staff of Guizhou Water Investment (Group) Co., Ltd. Li began with the inherent certainty and uncertainty of statute, then systematically unpacked core provisions: taxpayer scope, taxable transactions, deemed supplies, non-taxable activities, mixed sales and the timing of tax liability. Drawing on the Group’s core operations and day-to-day pain points, he dissected ten highly relevant real-world cases. Using a “provision + case deconstruction + guided questions” format, he sparked lively discussion and continuous engagement, filling the full three-hour session with practical insights. Attendees praised the briefing as tightly aligned with business realities, case-rich and instantly applicable, clearing up long-standing doubts and delivering solid value.