Didn't Know General Was Female

Didn't Know General Was Female summary:

After choking to death on a winter melon, Rong Jiahui thought that she would enter the netherworld and be reincarnated. But when she opened her eyes, she discovered – to her very horror – that she had returned twelve years into the past… Looking at the beautiful and awkward “little brother” that would be conferred the t.i.tle of Marshal in the future for outstanding military service, she almost let out a snort of laughter. She firmly decided to hug the thigh of this little brother, and climb to the top of her life! The plan was beautiful, but it had just one problem. Why had this little brother…suddenly turned into… Little sister…