There is a very strange phenomenon in designing. In the continuous revision, my output plan has experienced plagiarism (or tribute) from the original. Although I hardly refer to other products, the plan has gradually changed after the opinions of myself, my boss, customers, engineering and others are synthesized. Just like in a market economy, there is always a balance between product cost and price. The first product is still original, and the second product cannot be said to be similar to Bolang. It can only be said to be exactly the same.