Task [134]: Naming the twin girls "Niuniu" for 100 yuan. Deadline: March 10, 2007, 21:51:55. My niece gave birth to twin girls on May 3, 2006. The twins were born in Linyi, Shandong, with their hometown being Yingtan, Jiangxi. Their father's surname is Yu and their mother's surname is Xia. They are currently nicknamed Lingling and Huihui. Requirements for naming: The names should be pleasant to the ear, have a good taste, and highlight the fact that they are twins. Thank you all for your help.