科研就像是对未知世界的探险，回顾上一段行程：

Han He, Huaning Wang, Nonlinear force-free coronal magnetic field extrapolation scheme based on the direct boundary integral formulation, Journal of Geophysical Research: Space Physics, 2008, 113: A05S90. https://doi.org/10.1029/2007JA012441

当时感觉把这辈子的论文都写了，回头看其实路还很长

Han He, Huaning Wang, Yihua Yan, Nonlinear force-free field extrapolation of the coronal magnetic field using the data obtained by the Hinode satellite, Journal of Geophysical Research: Space Physics, 2011, 116: A01101. https://doi.org/10.1029/2010JA015610

就像是翻越层峦叠嶂

Han He, Huaning Wang, Yihua Yan, P. F. Chen, Cheng Fang, Variations of the 3-D coronal magnetic field associated with the X3.4-class solar flare event of AR 10930, Journal of Geophysical Research: Space Physics, 2014, 119: 3286-3315. https://doi.org/10.1002/2013JA019157

就像是攀爬陡峭的山峰

每次“受虐”之后，就会想着下一次行程，没有终点，所以重要的还是过程。