In the dynamic landscape of 2025, the tools businesses use to showcase their products have become more critical than ever. Product demos serve as the front line of customer engagement, helping companies translate complex offerings into relatable, actionable insights for their audiences. No longer confined to static slideshows or pre-recorded videos, product demo tools now harness cutting-edge technologies like artificial intelligence, augmented reality, and data analytics to deliver highly interactive and personalized experiences.

In modern building systems, fire safety has always been an important link that cannot be ignored. The complexity and density of people in buildings make the consequences disastrous once a fire occurs. As an important part of the building fire protection system, the importance of smoke exhaust ducts is self-evident.

Chinese function verbs, collectively referred to as , play a significant role in Chinese grammar. They can modify verbs, adjectives, entire sentences, and have been crucial especially in ancient Chinese for conveying nuance and meaning, and they continue to evolve in modern Mandarin. This article explores the importance of these grammatical components, their historical development, and how they fit into the evolving landscape of Chinese language learning. Mastering function words in Chinese is essential for both children and adults learning Mandarin.