幸苦
[xìng kŭ]
The term '幸苦' (xìng kǔ) seems to be a playful misspelling of '辛苦' (xīnkǔ), which means hardship, diligence, or tiring but fulfilling. It might be used by individuals who work very hard and find satisfaction in that, or just to express the mix of weariness and contentment from daily life experiences.