Education:
Ph.D.: Shandong University, 2004.
M.S.: Shandong University, 1998.
B.S.: Qufu Normal University, 1995.

Professional Positions:
2007-: Associate Professor,  Shandong University.
2004-2007: Associate Professor, Qufu Normal University.
2004-2006: Post-Doctoral Fellow, Shandong University.

Research Interests:
Additive number theory, public key cryptology, elliptic curve.

Grants:
Subproject of 973.
Project Post-Doctoral Fellowship of Shandong province.

Publications:
1. (with Xianmeng Meng) On additive problem with prime numbers of Special type, Demonstratio Mathematica. vol(XL), (2007), 271-287. 
2.  Hua's theorem in thin subsets, (Chinese) J. Math. (Wuhan) 27 (2007), no. 1, 65-72.
3. (with Xiaoyun Wang, Shihui Zheng) A New Fuzzy Digital Signature Scheme, Computer Engineering. 32(2006), no. 23, 40-42.
4. (with Xianmeng Meng ) The exceptional set in the two prime squares and a prime problem, Acta Math. Sin. (Engl. Ser.) 22 (2006), no. 5, 1329-1342.
5. (with Xianmeng Meng) A hybrid of theorems of Goldbach and Piatetski-Shapiro,  Chinese Ann. Math. Ser. B 27 (2006), no. 3, 341-352.
6. (with Jiahui Ji, Daxing Li) New proxy multi-signature, multi-proxy signature and multi-proxy multi-signature schemes from bilinear pairings,  (Chinese) Chinese J. Comput. 27 (2004), no. 10, 1429-1435.
7. On the sum of a prime and two prime squares, (Chinese) Acta Math. Sinica (Chin. Ser.) 47 (2004), no. 5, 845-858.
8. The sum of a prime and the square of a prime, (Chinese) Acta Math. Sinica (Chin. Ser.) 47 (2004), no. 4, 695-702.
9. (with Tao Liu) On the sum of a prime and a $k$-power of a prime, Adv. Math. (China) 33 (2004), no. 3, 363-368.
10. (with Jiguo Yu) On the sum of a prime and a $k$-power of a prime, Pure Appl. Math. (Xi'an) 19 (2003), no. 1, 62-67.
11. sums of a prime, and a square of prime, and a $k$-power of prime, Northeast. Math. J. 18 (2002), no. 4, 283-286.
12. (with Kefu Shi) A problem related to the sum of each digit's $k$th-power of a natural number, (Chinese) Qufu Shifan Daxue Xuebao Ziran Kexue Ban 27 (2001), no. 2, 40-41.