✅ ❌ No, we couldn't find enough information regarding this on authoritative news outlets. However, here's what we found:

1. The concept of cup friction is discussed in the context of frictional forces, which oppose motion when surfaces come into contact. However, specific detailed explanations about "cup friction" in the context of Jiwi's Machines are not readily available on major news outlets. For general information on friction, you can refer to:

- https://www.khanacademy.org/science/ap-college-physics-1/xf557a762645cccc5:force-and-translational-dynamics/xf557a762645cccc5:friction-force/a/what-is-friction - Khan Academy provides a comprehensive explanation of friction forces.

- https://www.turito.com/blog/physics/frictional-force - Turito discusses the definition and types of frictional forces, but does not specifically address "cup friction."

2. The floating rice experiment, which involves friction, is mentioned on Rookie Parenting, but it does not provide specific details about "cup friction":

- https://www.rookieparenting.com/floating-rice/

Given the lack of specific information on "cup friction" in the context of Jiwi's Machines from major news outlets, the provided information may be partially or fully inaccurate.