Can you suggest Cdramas? I am a beginner in them.

I am afraid of them because I am a beginner in them. 

Historical ,wuxia ,xianxia can come , BUT no love triagle and have a happy ending.

Oh yes how I love my C-dramas.. here are some favs..

Historical:  ( I made sure that the ones I recommend aren't too heavy so it's on the lighter/easier watch side,  and if there is a love triangle, it's slight and doesn't heavily affect the main couple)

• The Romance of Hua Rong
• A Camellia Romance
• The Princess and the Werewolf
• Truth or Dare
• Wrong Carriage, Right Groom
• Truth Or Dare

Modern: (again, all are happy ending, with no love triangle. There might be slight interest in other characters, but definitely not strong enough in my opinion to count as a love triangle..) 

• My Little Happiness- (2FL likes the ML, but it's not super heavy)
• Amidst a Snowstorm of Love (the first few episodes are slow... don't give up on it, it gets better)
• Everyone Loves Me
• I May Love You
• Assistant of Superstar
• Moonlight
• My Boss