1 INTRODUCTION

2 SELECT LAMOST RGB SAMPLE

2.1 LAMOST Data

2.2 Classification of RGB and RC

2.3 The RGB Sample

3 MASS AND AGE DETERMINATION

3.1 The Method

3.2 Validation of Ages and Masses

3.3 Age and Mass Estimates from C, N Abundance

4 RELATIONS AMONG AGE, METALLICITY AND KINEMATICS

4.1 Distribution of Stellar Ages in the $R-Z$ Plane

4.2 Age, $[\alpha/\mathrm{Fe}]$ and [Fe/H] Relation

4.3 Stellar Age Versus Kinematics Parameters

5 CONCLUSION