Producer and former partner of the actress 郑爽. In 2021 he said on Weibo that they had two children by surrogacy in the US, which is banned in mainland China.
Zhāng Héng fā de wēibó yǐnqǐ le dàjiā duì dàiyùn de tǎolùn.
Zhang Heng's Weibo post set off a public debate about surrogacy.
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He sounds exactly like 张衡 (78–139), the Han scientist who built the seismoscope 地动仪 in 132. The last character tells them apart: this 张恒 has 恒 'lasting', the scientist 衡 'to weigh, balance'.