女汉子刀枪不入百毒不侵
[nǚ hàn zi dāo qiāng bù rù băi dú bù qīn]
This net-name is for a woman who describes herself as tough and immune to various pressures and temptations in life. 'Lady Invincible' means she’s fearless and strong in character, not being easily swayed by external factors.