I scanned all 3 Documents and do not see any connection of the first 2 links with HHSE. This looks like a mistake by IHub. All 3 Documents have a similar date and time, but the first 2 Filings and Links were located under HHSE in error, for whatever reason.
This can be further verified by going to SEC EDGAR website HHSE Filings. HHSE has only 1 Filing for Friday March 28, an 8-K.