human
Evergrande Real Estate is the main body of China Evergrande’s initial A-share listing. It introduced three batches of strategic investors at the end of December 2016, at the end of May 2017, and in November 2017, respectively introducing funds of 30 billion, 40 billion, and 60 billion yuan. . Most of the 130 billion yuan raised by Yinzhan was used to repay the perpetual bonds previously issued by China Evergrande.
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When did these investments take place?
gpt
--- Reasoning ---
1. Is the question multiple-choice question?
No
2. Is it implied multiple-choice question?
No
3. If two experts were independently asked the question, will the final answer be exactly the same?
Yes

--- Answer ---
grounded