Issues on Independent Rights in the Detailed Rules for the Implementation of the Patent Law (20 10 Revision)

You have misunderstood the first question, and now you are allowed to write one product and one use in two independent claims. The meaning of the detailed rules for the implementation can be understood as not writing subordinate claims in the form of independent claims.

For the second question, yes, for example, you can protect an advanced car engine first, and of course you can also request to protect the car made of this engine in the application for consent. If the engine is creative, the car must be creative, and the two independent claims are also unitary.

Of course, you can also understand the law in this way. If neither of the two ways you say is allowed, there is no need to stipulate the singularity rule in Chapter 6 of Part II of the Review Guide.