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Variability of mass accretion provides important information about disk evolution and the geometry of the accretion flows. While there are many studies focusing on young stars, accretion monitoring in the substellar regime has been relatively uncommon. At optical wavelengths, the H-alpha emission is a bright accretion tracer, proving an opportunity to observe young brown dwarfs with small telescopes. In this talk, I will introduce our ongoing efforts of monitoring brown dwarfs with the one-meter telescope at Lulin Observatory and present the preliminary results.