\\         {\Lambda}_0 &\equiv \sup_{A\in{\mathcal{M}}}~ \frac{0}{n}{\|\tilde{X}A\tilde{X}^{{\sf T}}\|}_{\rm op},\\         {\Lambda}_0 &\equiv \sup_{A\in{\mathcal{M}}}~ \frac{0}{n}{\|\tilde{X}A\tilde{X}^{{\sf T}}\|}_