Intercalation of metal atoms in multi-layer graphene films results in carrier doping and mechanical deformation, which provides a good opportunity for exploring fascinating quantum phenomena arising from its peculiar electronic structure. With intercalation of Ca atoms in top-most bilayer graphene epitaxially grown on SiC substrate, we recently found the electronic properties of the Ca-intercalated bilayer graphene remarkably depends on the flatness of the graphene film that could be largely influenced by the Ca intercalation. On a flat Ca-intercalated bilayer graphene that is separated from the SiC substrate by another graphene sheet, a remarkable superconducting transition is observed at about 8.83 K, which is higher than the critical temperature of any other superconducting bilayer graphene ever reported. In contrast, on a wrinkled Ca-intercalated bilayer graphene that is separated by from the SiC substrate by another intercalated layer of Ca atoms, we observed Landau levels without applying an external magnetic field, which indicates the existence of pseudo magnetic field varying from 80 T to 2000 T. More details on the superconductivity and the pseudo magnetic field in the Ca-intercalated bilayer graphene will be discussed in the talk.