防

fáng to protect; to defend; to guard against; to prevent

追踪

zhuī zōng to follow a trail; to trace; to pursue

比特币

bǐ tè bì bitcoin (virtual currency)

混合

hùn hé to mix; to blend

联系方式

lián xì fāng shì contact details

TG:@e86e86wvw