BOTH contracts are royalty-based contracts. Check the dictionary to find out what the word 'royalty' means.
The difference between a Webnovel contract and an EMP contract is that the first is exclusive, and the second non-exclusive.
Exclusive means you sell all rights to your work to Webnovel. Non-exclusive means you retain the rights to your work, and can publish it elsewhere. However, you'll be obliged to stay at least two chapters ahead on the EMP server (e.g. if your serial currently has 102 chapters, you can post up to 100 chapters anywhere you like, but chapters 101 and 102 on the EMP server only. Once you've written 104 chapters, you can post 101 and 102 anywhere you like but 103 and 104 only on the EMP server - get it?).
Also, if you sign a non-exclusive contract with EMP, your income will be smaller. Webnovel pays a 50% net royalty, and so does EMP. But EMP in turn receives 50% of income from Webnovel, so you end up with 25% (50% of 50%).
Hope that clears any confusion you might have.
Final advice: the dictionary is your friend. Use it often, it will help you avoid making a fool of yourself.
Krizantem
Krizantem 2 - For exclusive contract you could contact "EMP Publishing" and they will sign the contract for you, you will still have the rights of your own book but you will paid less.
This is nonsense. EMP Entertainment are the people offering the NON-exclusive contract. And they won't 'sign the contract for you' either. Read what you have written before you post it.