I only have the piano score of "Maira Variations", which is from the selection of Chinese vocal works compiled by Meng Jinhui of the Shanghai Conservatory of Music. I typed the score myself. I was in a hurry and didn't type the lyrics. It has been sent to your email. Hope this helps!

The song "A Lark Flying from the Military Camp" is an old song and can be found in any vocal music collection. I don't have this ready-made, it's in "Vocal Music Tutorial III Chinese Works" published by Nanjing Normal University.