talk later :)

我现在正在写论文。再见！
I'm writing my thesis now, see you later :)

”see you later“ in Chinese should be “一会儿见”，or “待会儿见” 。  

再见=good bye

talk later :)

 我现在赈灾写论文。再见！   我现在正忙着写论文 or 我现在正在写论文， 一会见！
I'm writing my thesis now, see you later :)

talk later :)

我现在赈灾正在（忙着）写论文。再见！
I'm writing my thesis now, see you later :)

talk later :)

我现在正在写论文。再见！
I'm writing my thesis now, see you later :)