Read the completed Novel first

 Sheriziya:

Don't worry, it's a translation error indeed. Later on it's revealed it's his mother, NOT his wife. I had the same fear initially. 

Thank the Lord! i was worried 😯 thanks for clarifying

 Rhody401:

• If she is not Mudon, then who is she?
• Is there an explanation for how she ended up in Mudon's body?
• How does she know that Mudon has not been intimate with her husband?
• What illness did Mudon have, and could it be related to her entering Mudon's body?
• Who is the other girl that entered or was reborn into Mudon's body?

Hii,

1. Her name is not mentioned. So they don't specify it much. I am on ch. 237, and they aren't making it extremely focused on the Mudan who transmigrated; only a few mentions here and there. 

2. The OG Mudan died, and so did our current Mudan in her lifetime; that is how she ended up in this time period.

3. When she woke up, she woke up with all her memories intact. It is mentioned; therefore, even if she feels a bit awkward at first, she's able to relate and manage her emotions and relationship. 

4. She was weak and sickly since childhood, I believe. or she was simply putting on an act. ( i might be wrong, or i may have forgotten what the actual reason was; someone please mention the exact reason!) All I remember is that before she died, she was actually sick and heartbroken.

5. Again, we don't know clearly. We just go with the flow. She appreciates the chance to have been reborn and given a second chance. I remember a scene where she thanks the heavens.

I hope this helps! :) 

Am at chap 173, where Mudan's family is gathering some agarwood to send to the palace, will there be any problem  cause all of it is that coward Liu chang's plan.