The evidence strongly supports the core elements of the statement. Multiple sources confirm that 'Machi Big Brother' is Huang Licheng and that his on-chain trading activity is publicly tracked. A highly relevant industry report from Bitget News directly corroborates the main claim, stating he increased his long positions in ETH to a value of $10.92 million. This figure is very close to the $9.6 million mentioned in the statement, with the small discrepancy likely attributable to market price fluctuations or different reporting times. Another source confirms his total ETH long positions exceed $115 million, making a single position of this size entirely plausible within his portfolio.The claim of a '75% floating gain' is not directly verified by any single source. However, one article reports that his portfolio has over $30 million in profit, partly from ETH trading, which makes a large floating gain on a specific position credible. There is one piece of conflicting evidence from The Economic Times, which reports he closed an ETH position at a loss. This is considered a weak contradiction, as a trader can have multiple positions simultaneously and this likely refers to a different, unrelated trade. Given the strong, direct evidence supporting the existence and approximate value of the long position, this single conflicting report does not significantly undermine the statement's overall truthfulness. The assessment is therefore 'likely_true' with high confidence.